{"id":6469,"date":"2026-03-09T20:48:33","date_gmt":"2026-03-09T19:48:33","guid":{"rendered":"https:\/\/tevipa.com\/blog\/?p=6469"},"modified":"2026-03-09T20:49:09","modified_gmt":"2026-03-09T19:49:09","slug":"the-beret","status":"publish","type":"post","link":"https:\/\/tevipa.com\/blog\/en\/the-beret\/","title":{"rendered":"The Beret"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512.png\" alt=\"Logo C\u00f3mo Cubrir un Cuerpo\" class=\"wp-image-6\" style=\"width:270px;height:auto\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512.png 512w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512-300x300.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/07\/logo512-150x150.png 150w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n<\/div>\n\n\n<h1 class=\"wp-block-heading has-text-align-center\">The Beret<br>Parametric Geometric Construction System<\/h1>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/titulo.png\" alt=\"Beret variations in different colours showing front view, profile, top plate and interior structure with lining and sweatband.\" class=\"wp-image-6345\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/titulo.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/titulo-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Origin and history of the beret<\/h2>\n\n\n\n<p class=\"text-justify\">The beret is one of the oldest headwear garments in Europe. Although today it is commonly associated with the Basque Country and southern France, its form\u2014a circular wool or felt cap that adapts to the head\u2014has much older precedents.<\/p>\n\n\n\n<p class=\"text-justify\">In the Mediterranean world, rounded head coverings very similar to the beret already appear in Etruscan, Greek and Roman representations, generally made of wool or felt. These are not yet berets in the modern sense, but they share the same logic: a flexible textile piece, without a rigid brim, covering the head in a circular form.<\/p>\n\n\n\n<p class=\"text-justify\">A general overview of these precedents and of the evolution of the beret in European headwear history can be seen here:<br><a href=\"https:\/\/en.wikipedia.org\/wiki\/Beret?utm_source=chatgpt.com\">https:\/\/en.wikipedia.org\/wiki\/Beret<\/a><\/p>\n\n\n\n<p class=\"text-justify\">During the Middle Ages and the Renaissance, rounded caps very similar to the beret frequently appear in Flemish, Italian and German paintings. Peasants, craftsmen and even some members of the bourgeoisie are depicted wearing soft wool head coverings that clearly anticipate the shape of the contemporary beret.<\/p>\n\n\n\n<p class=\"text-justify\">However, the beret as we know it today was mainly consolidated in the mountainous regions of the Pyrenees, along the border between France and Spain. There it was used for centuries by shepherds from B\u00e9arn, Navarre, Aragon and the Basque Country, who needed a garment resistant to cold, rain and wind.<\/p>\n\n\n\n<p class=\"text-justify\">These caps were made from knitted wool that was later felted. Felting compacted the fibres and produced a dense, warm and relatively waterproof fabric, ideal for outdoor work.<\/p>\n\n\n\n<p class=\"text-justify\">From the nineteenth century onwards, production began to be industrialized in southern France, particularly in towns such as Nay and Oloron-Sainte-Marie, which became historical centres of manufacture. In Nay, a museum dedicated to this tradition can still be visited today:<br><a href=\"https:\/\/www.museeduberet.com\/nouveautes\/166-1194-eridan-.html\">https:\/\/www.museeduberet.com\/nouveautes\/166-1194-eridan-.html<\/a><\/p>\n\n\n\n<p class=\"text-justify\">From there the beret spread throughout Europe and later across the rest of the world, adopted both by workers and peasants as well as by artists, soldiers and designers.<\/p>\n\n\n\n<p class=\"text-justify\">Today it continues to be produced in its traditional felted wool form, but it also appears in many other fabrics\u2014sewn cloth, cotton, linen or technical blends\u2014which allow it to be constructed through flat patternmaking.<\/p>\n\n\n\n<p class=\"text-justify\">It is precisely this variant, built from a geometric pattern, that interests us in this article.<\/p>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">The small mystery of the little stem<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/senorita.png\" alt=\"Portrait of a young woman wearing a light beret with the small central knot visible on the top plate.\" class=\"wp-image-6353\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/senorita.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/senorita-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">One of the most characteristic features of the beret is the small cord that appears at the centre of the upper crown.<\/p>\n\n\n\n<p class=\"text-justify\">This element, known in French as <em>cabillou<\/em>, originates from the traditional manufacturing process. Berets were initially knitted as a circular piece of wool that was closed in the centre with a small finishing knot of the yarn. When the garment was felted and shaped into the cap, that small end remained visible on the top.<\/p>\n\n\n\n<p class=\"text-justify\">Over time this detail ceased to be merely a technical consequence and became a distinctive feature of the beret, which many pieces still preserve even when it is no longer necessary.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-6469_070e60-4c .kt-block-spacer{height:30px;}.wp-block-kadence-spacer.kt-block-spacer-6469_070e60-4c .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-6469_070e60-4c\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">From traditional object to geometric system<\/h2>\n\n\n\n<p class=\"text-justify\">Despite its long history, the structure of the beret is surprisingly simple.<\/p>\n\n\n\n<p class=\"text-justify\">From a geometric point of view it can be described as the difference between two contours:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">an outer perimeter that defines the volume of the garment<\/li>\n\n\n\n<li class=\"text-justify\">an inner opening that determines the fit on the head<\/li>\n<\/ul>\n\n\n\n<p class=\"text-justify\">This simplicity makes it possible to describe the beret through a <strong>parametric geometric system <\/strong>capable of adapting to different sizes, cranial proportions and design variants.<\/p>\n\n\n\n<p class=\"text-justify\">In the following sections we will analyse the elements that compose the beret and the variables necessary to construct its pattern accurately.<\/p>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Structural description and nomenclature of the beret<\/h2>\n\n\n\n<p class=\"text-justify\">For the purposes of this geometric system we distinguish the following parts.<\/p>\n\n\n\n<p>The beret is a headwear garment composed of a circular upper element (crown plate) connected to an inner opening that defines the fitting perimeter on the head.<\/p>\n\n\n\n<p class=\"text-justify\">In its traditional construction it may be moulded in a single piece, usually of felt, whereas in flat patternmaking it is constructed through the joining of circular or elliptical surfaces.<\/p>\n\n\n\n<p class=\"text-justify\">For the purposes of this geometric system we distinguish the following elements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Crown plate (P)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome001.png\" alt=\"Top plate of a beret shown in profile view, top view and interior view with lining and sweatband.\" class=\"wp-image-6360\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome001.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome001-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">Upper element of the beret.<\/p>\n\n\n\n<p class=\"text-justify\">Shape: circular or elliptical.<\/p>\n\n\n\n<p class=\"text-justify\">It is defined by the outer radius (<strong>re<\/strong>) if it is circular, or by the major (<strong>l<\/strong>) and minor (<strong>w<\/strong>) axes in the case of an ellipse.<\/p>\n\n\n\n<p class=\"text-justify\">The crown plate determines the visual spread and the volume of the garment.<\/p>\n\n\n\n<p class=\"text-justify\">In sewn cloth berets it presents a perimeter seam along its edge.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Brim or spread (A)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome002.png\" alt=\"Beret brim showing profile view, top view and interior structure between the outer plate and the head opening.\" class=\"wp-image-6368\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome002.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome002-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">We define the brim as the piece that integrates the radial difference between the outer edge of the crown plate and the inner opening.<\/p>\n\n\n\n<p class=\"text-justify\">The inner opening is the aperture through which the beret fits onto the head.<\/p>\n\n\n\n<p class=\"text-justify\">It may be circular or elliptical.<\/p>\n\n\n\n<p class=\"text-justify\">The circular opening is defined by the theoretical radius (<strong>rt<\/strong>), while the elliptical opening is defined by the anteroposterior (<strong>l\/2<\/strong>) and bilateral (<strong>w\/2<\/strong>) semi-axes of the head.<\/p>\n\n\n\n<p class=\"text-justify\">The size of the beret is identified with the inner opening, which corresponds to the head circumference (<strong>k<\/strong>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Sweatband<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome004.png\" alt=\"Interior sweatband of a beret visible along the inner head opening.\" class=\"wp-image-6376\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome004.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome004-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">In garment making, millinery and leatherwork, the sweatband is a flexible band placed inside the beret that comes into contact with the head or skin, intended to absorb sweat and improve comfort.<\/p>\n\n\n\n<p class=\"text-justify\">It is also called the inner band or sweatband.<\/p>\n\n\n\n<p class=\"text-justify\">Traditionally the sweatband was made from fine leather, especially soft tanned sheepskin, which is very absorbent and comfortable.<\/p>\n\n\n\n<p class=\"text-justify\">By extension, the term is now also used for textile or synthetic bands performing the same function.<\/p>\n\n\n\n<p class=\"text-justify\">In many berets the sweatband may be made of cotton, polyester or technical fabrics, although the traditional name is still used.<\/p>\n\n\n\n<p class=\"text-justify\">Inside the sweatband we usually find the <strong>sweatband loop<\/strong>.<\/p>\n\n\n\n<p class=\"text-justify\">It is a small loop or tape tab, generally textile, located inside the beret and attached to the sweatband at the back of the garment.<\/p>\n\n\n\n<p class=\"text-justify\">Its main function is to indicate the rear position of the hat, facilitating its correct placement on the head.<\/p>\n\n\n\n<p class=\"text-justify\">Traditionally it is made with a narrow ribbon folded into a loop and sewn onto the inner band.<\/p>\n\n\n\n<p class=\"text-justify\">Besides its practical function, this element constitutes a traditional detail of millinery.muy suave y absorbente.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Beret lining<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome003.png\" alt=\"Interior lining of a beret covering the top plate and concealing the seams.\" class=\"wp-image-6384\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome003.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome003-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">The <strong>lining <\/strong>of the beret is the inner layer of fabric that partially or completely covers the interior of the garment in order to hide the seams, protect the outer fabric and improve comfort in contact with the head.<\/p>\n\n\n\n<p class=\"text-justify\">It is attached to the garment by means of the sweatband, which holds the edge of the lining to the inner perimeter of the beret.<\/p>\n\n\n\n<p class=\"text-justify\">In addition to its protective function, the lining contributes to giving stability to the garment and improving its internal finish.<\/p>\n\n\n\n<p class=\"text-justify\">Only the crown plate may be lined, or both the crown plate and the brim.<\/p>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Geometric typology of the beret<\/h2>\n\n\n\n<p class=\"text-justify\">The beret can be classified according to its geometric and constructive structure.<\/p>\n\n\n\n<p class=\"text-justify\">From a technical point of view there are four main classification criteria.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">According to the shape of the crown plate and the inner opening<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome006_-elipticas-redondas.png\" alt=\"Comparison between circular and elliptical beret showing the top plate and inner opening.\" class=\"wp-image-6391\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome006_-elipticas-redondas.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome006_-elipticas-redondas-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">The crown plate may be:<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Circular crown plate<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">The crown plate is a circumference.<br>This is the simplest and most traditional solution.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Elliptical crown plate<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">The crown plate adopts an elliptical shape, adapting better to cranial morphology when the ovality index is considered.<\/p>\n\n\n\n<p class=\"text-justify\">This allows for a more anthropometric garment.<\/p>\n\n\n\n<p class=\"text-justify\">The inner opening determines the fit on the head and constitutes the main structural element of the garment.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Circular opening<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">The inner contour is a circumference.<br>This is the simplest and most traditional solution.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Elliptical opening<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">The inner contour adopts the form of an ellipse, adapting better to cranial morphology when the ovality index is considered.<\/p>\n\n\n\n<p class=\"text-justify\">It allows a more anthropometric fit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">According to the position of the opening relative to the crown plate<\/h3>\n\n\n\n<p class=\"text-justify\">The inner opening may be positioned in relation to the geometric centre of the outer crown plate.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/concentricaExcentrica.png\" alt=\"Comparison between concentric and eccentric beret depending on the position of the inner opening relative to the top plate centre.\" class=\"wp-image-6399\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/concentricaExcentrica.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/concentricaExcentrica-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Concentric beret<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">The centre of the opening coincides with the centre of the crown plate.<\/p>\n\n\n\n<h4 class=\"wp-block-heading text-justify has-medium-font-size\"><strong><strong>Eccentric beret<\/strong><\/strong><\/h4>\n\n\n\n<p class=\"text-justify\">The centre of the opening is displaced with respect to the centre of the crown plate.<\/p>\n\n\n\n<p class=\"text-justify\">This displacement may occur vertically, horizontally or in a combined direction, generating controlled drape and asymmetry effects.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">According to the width of the spread<\/h3>\n\n\n\n<p class=\"text-justify\">The spread is the radial distance between the inner opening and the outer perimeter of the crown plate.<\/p>\n\n\n\n<p class=\"text-justify\">It may be classified as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">narrow spread (tight beret)<\/li>\n\n\n\n<li class=\"text-justify\">classic spread<\/li>\n\n\n\n<li class=\"text-justify\">medium spread<\/li>\n\n\n\n<li class=\"text-justify\">wide spread<\/li>\n<\/ul>\n\n\n\n<p class=\"text-justify\">The spread does not determine the fit of the garment, but rather the volumetric expression and the drape of the beret.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/db02.png\" alt=\"Comparison between berets with narrow, classic, medium and wide brim showing different proportions between the top plate and the inner opening.\" class=\"wp-image-6406\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/db02.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/db02-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">According to the internal adjustment system<\/h3>\n\n\n\n<p class=\"text-justify\">The adjustment system can be implemented in several ways.<\/p>\n\n\n\n<p class=\"text-justify\"><strong><strong>Without inner band<\/strong>: <\/strong>The opening is finished directly.<\/p>\n\n\n\n<p class=\"text-justify\"><strong><strong>With concealed inner band<\/strong>: <\/strong>La cinta queda integrada en el interior y no es visible desde el exterior.<\/p>\n\n\n\n<p class=\"text-justify\"><strong><strong>With visible inner band<\/strong>: <\/strong>The band becomes part of the design and may act as a decorative or structural element.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Structural conclusion<\/h3>\n\n\n\n<p class=\"text-justify\">The combination of these four criteria allows the generation of a complete parametric system of berets adaptable to different cranial morphologies, styles and ages, while maintaining a coherent geometric basis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify\">Geometric centre of the crown plate (cp)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-1024x576.png\" alt=\"Geometric centre of the beret top plate shown in the geometric construction diagram.\" class=\"wp-image-6414\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/centro.png 1300w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">Centre of the crown plate.<\/p>\n\n\n\n<p class=\"text-justify\">In the classic model, the centre of the <strong>crown plate<\/strong> (cp) coincides with the centre of the inner opening.<\/p>\n\n\n\n<p class=\"text-justify\">In an offset variant, the centre of the <strong>crown plate (cp)<\/strong> is displaced by a<strong> distance (d)<\/strong> relative to the centre of the opening, generating directional drape.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Centre of the opening (ch)<\/h3>\n\n\n\n<p class=\"text-justify\">Geometric centre of the inner perimeter.<\/p>\n\n\n\n<p class=\"text-justify\">Defines the structural fitting point on the head.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome011.png\" alt=\"Geometric centre of the inner opening of the beret shown in the geometric construction diagram.\" class=\"wp-image-6422\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome011.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome011-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Offset (d)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"394\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome012.png\" alt=\"Centre displacement of the beret showing the distance between the plate centre (cp) and the inner opening centre (ch).\" class=\"wp-image-6430\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome012.png 700w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome012-300x169.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">The centre offset, or eccentricity, is the distance between the centre of the crown plate (<strong>cp<\/strong>) and the centre of the opening (<strong>ch<\/strong>).<\/p>\n\n\n\n<p class=\"text-justify\">In the previous illustration the centre offset has been marked with a thick blue line.<\/p>\n\n\n\n<p class=\"text-justify\">When the beret is not concentric (when d \u2260 0), the beret presents an irregular spread.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Structural variants<\/h3>\n\n\n\n<p class=\"text-justify\">According to geometric combination:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"text-justify\">concentric circular<\/li>\n\n\n\n<li class=\"text-justify\">offset circular<\/li>\n\n\n\n<li class=\"text-justify\">centred elliptical<\/li>\n\n\n\n<li class=\"text-justify\">offset elliptical<\/li>\n<\/ul>\n\n\n\n<p class=\"text-justify\">Each one produces a different volumetric behaviour.<\/p>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\">Table and variables<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1024x576.png\" alt=\"Table showing variables and formulas used for the geometric calculation of a beret pattern from head circumference.\" class=\"wp-image-6438\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/tabla-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\"><strong>k<\/strong>: head circumference<br><strong>ioc<\/strong>: cranial ovality index<br><strong>deq<\/strong>: equivalent diameter<br><strong>ml<\/strong>: anteroposterior cranial multiplier<br><strong>mw<\/strong>: bilateral cranial multiplier<br><strong>l<\/strong>: anteroposterior cranial diameter<br><strong>w<\/strong>: bilateral cranial diameter<br><strong>rt<\/strong>: theoretical head radius<br><strong>ree<\/strong>: outer radius for tight beret<br><strong>rec<\/strong>: outer radius for classic beret<br><strong>rem<\/strong>: outer radius for medium beret<br><strong>rea<\/strong>: outer radius for wide beret<br><strong>aae<\/strong>: brim width of tight beret<br><strong>aac<\/strong>: brim width of classic beret<br><strong>aam<\/strong>: brim width of medium beret<br><strong>aaa<\/strong>: brim width of wide beret<\/p>\n\n\n\n<p class=\"text-justify\">In this section we define precisely all the variables used for the calculation and construction of the beret.<\/p>\n\n\n\n<p class=\"text-justify\">Each symbol, each formula and each designation responds to a specific and reproducible function.<\/p>\n\n\n\n<p class=\"text-justify\">The objective is that once the terms and their relationships are understood, the system can be used autonomously for any head size, from baby to adult XL, and adapted to circular or elliptical construction variants.<\/p>\n\n\n\n<p class=\"text-justify\">Below are the variables used in the system, with their description, type and formula where applicable.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Head circumference (k)<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1024x576.jpg\" alt=\"Measurement of anteroposterior (a) and bilateral (b) cranial diameters for proportional baseball cap pattern construction\" class=\"wp-image-6158\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1024x576.jpg 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-300x169.jpg 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-768x432.jpg 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1536x864.jpg 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-2048x1152.jpg 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/02\/bcp-9_01-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">This is the real circumference of the head measured with a flexible measuring tape, taken along the support area of the beret (forehead and occipital area).<\/p>\n\n\n\n<p class=\"text-justify\">This measurement is the basis of the garment.<\/p>\n\n\n\n<p class=\"text-justify\">All other measurements derive from it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Cranial ovality index (ioc)<\/h3>\n\n\n\n<p class=\"text-justify\">The cranial ovality index expresses how far the shape of the head deviates from a perfect circle when represented as an ellipse.<\/p>\n\n\n\n<p class=\"text-justify\">It is defined as:<\/p>\n\n\n\n<p class=\"text-justify\">ioc = anteroposterior diameter \/ bilateral diameter<\/p>\n\n\n\n<p class=\"text-justify\">The anteroposterior diameter corresponds to the distance between the forehead and the most prominent point at the back of the head.<\/p>\n\n\n\n<p class=\"text-justify\">The bilateral diameter corresponds to the distance between both sides of the skull, taken from ear to ear.<\/p>\n\n\n\n<p class=\"text-justify\">This index is used to transform the dimensions of a circle into an ellipse when an elliptical variant is used.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Equivalent diameter (deq)<\/h3>\n\n\n\n<p class=\"text-justify\">Diameter of the circle equivalent to the measured head circumference.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><mo>=<\/mo><mfrac><mi>k<\/mi><mi>\u03c0<\/mi><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">deq = \\frac{k}{\\pi}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<p class=\"text-justify\">It serves as a base measurement for deriving other proportions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Anteroposterior cranial diameter multiplier (ml)<\/h3>\n\n\n\n<p>Coefficient used to estimate the anteroposterior cranial axis from the equivalent diameter. Calculated from external anthropometric databases.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Bilateral cranial diameter multiplier (mw)<\/h3>\n\n\n\n<p class=\"text-justify\">Coefficient used to estimate the lateral (bilateral) cranial axis from the equivalent diameter. Calculated from external anthropometric databases.<\/p>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Anteroposterior cranial diameter (l)<\/h3>\n\n\n\n<p class=\"text-justify\">Estimation of the head diameter along the anteroposterior axis, used when calculating the elliptical inner opening.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>l<\/mi><mo>=<\/mo><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><mo>\u00d7<\/mo><mi>m<\/mi><mi>l<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">l = deq \\times ml<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Bilateral cranial diameter (w)<\/h3>\n\n\n\n<p class=\"text-justify\">Estimation of the head diameter along the lateral axis, used for the elliptical opening.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><mi>w<\/mi><mo>=<\/mo><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><mo>\u00d7<\/mo><mi>m<\/mi><mi>w<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">w = deq \\times mw<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Theoretical head radius (rt)<\/h3>\n\n\n\n<p class=\"text-justify\">Radius of the circle equivalent to the head circumference. It is the base used to calculate inner and outer radii.<\/p>\n\n\n\n<p class=\"text-justify\">It corresponds to half of the equivalent diameters.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><msub><mi>r<\/mi><mi>t<\/mi><\/msub><mo>=<\/mo><mfrac><mrow><mi>d<\/mi><mi>e<\/mi><mi>q<\/mi><\/mrow><mn>2<\/mn><\/mfrac><mo>=<\/mo><mfrac><mi>k<\/mi><mrow><mn>2<\/mn><mo>\u22c5<\/mo><mi>\u03c0<\/mi><\/mrow><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">r_t = \\frac{deq}{2} = \\frac{k}{2 \\cdot \\pi}<\/annotation><\/semantics><\/math><\/div>\n\n\n\n<h3 class=\"wp-block-heading text-justify has-medium-font-size\">Beret outer radius index (ire)<\/h3>\n\n\n\n<p class=\"text-justify\">We define four values depending on the desired spread of the beret.<\/p>\n\n\n\n<p class=\"text-justify\">In all cases the theoretical head radius is multiplied by the suggested index.<\/p>\n\n\n\n<p class=\"text-justify\">These values function as guidelines to achieve the correct shape of the beret.<\/p>\n\n\n\n<p class=\"text-justify\">The indices are calibrated from proportions observed in industrial berets and adapted to a clear and scalable parametric system.<\/p>\n\n\n\n<p class=\"text-justify\">To obtain the outer radius (re) of a beret we multiply the outer radius index (ire) by the theoretical head radius.<\/p>\n\n\n\n<div class=\"wp-block-math\"><math display=\"block\"><semantics><mrow><msub><mi>r<\/mi><mi>e<\/mi><\/msub><mo>=<\/mo><msub><mi>r<\/mi><mi>t<\/mi><\/msub><mo>\u22c5<\/mo><msub><mi>i<\/mi><mrow><mi>r<\/mi><mi>e<\/mi><\/mrow><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">r_e = r_t \\cdot i_{re}<\/annotation><\/semantics><\/math><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1024x576.png\" alt=\"Outer radius index of the beret used to calculate the plate radius from the theoretical head radius.\" class=\"wp-image-6445\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome010-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"text-justify\">The following indices are established:<\/p>\n\n\n\n<p class=\"has-text-align-center\">Outer radius index for tight beret: 1.35<\/p>\n\n\n\n<p class=\"has-text-align-center\">Outer radius index for classic beret: 1.50<\/p>\n\n\n\n<p class=\"has-text-align-center\">Outer radius index for medium beret: 1.64<\/p>\n\n\n\n<p class=\"has-text-align-center\">Outer radius index for wide beret: 1.80<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1024x576.png\" alt=\"Comparison of the four outer radius index values defining beret spread: narrow, classic, medium and wide.\" class=\"wp-image-6452\" style=\"width:700px\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-768x432.png 768w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1536x864.png 1536w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-2048x1152.png 2048w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2026\/03\/nome009-1320x743.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>The \u201crag\u201d of the beret<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-9-16 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"El secreto geom\u00e9trico de la boina\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/bkXmt7dxR34?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading text-justify has-medium-font-size\"><strong>Custom pattern<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000-1024x576.png\" alt=\"Drawing of a bricklayer placing bricks in front of a garden with a fountain, symbolizing work in progress\" class=\"wp-image-2861\" srcset=\"https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000-1024x576.png 1024w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000-300x169.png 300w, https:\/\/tevipa.com\/blog\/wp-content\/uploads\/2025\/10\/enConstruccion2000.png 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The beret is a traditional headwear whose structure can be described through a very simple geometry: the relationship between an outer volume and an inner opening that determines its fit on the head. From this idea a parametric construction system is developed based on head circumference, the cranial ovality index and the relationship between the top plate, the brim width and the inner opening. This system makes it possible to generate beret patterns adaptable to different sizes, cranial proportions and design variations.<\/p>\n","protected":false},"author":1,"featured_media":6461,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1349,1012,1105,1359,607],"tags":[2105,1371,66,74,147,171,514,251,259,694,683,267,50,58],"class_list":["post-6469","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accessory","category-blog-en","category-blog-short-en","category-cap","category-pattern","tag-beret-en","tag-cap","tag-como-cubrir-un-cuerpo-en","tag-comocubriruncuerpo-en","tag-fashion-design","tag-fashion-school","tag-fashionpatternmaking","tag-pattern","tag-pattern-making","tag-patternmaking-technique","tag-patternmaking-tutorial","tag-patterns","tag-tele-virtual-patronage-en","tag-televirtualpatronage-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The Beret - Tele Virtual Patronage<\/title>\n<meta name=\"description\" content=\"Parametric geometric system to draft a beret pattern from head circumference. 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