skip to Main Content
Parts Of A Cap

Anatomy of a Cap – The 10 Parts of a Cap with Pictures

Whether to cover up your bald head or bad hair day, or keep you relaxed in the dog days of summer or show off your favorite sports team logo or for celebrities to go incognito,  the cap itself receives a golden crown for its mind-blowing functionality! Yes, believe it or not, every part of a cap has a purpose, even the button on the top of it!

If you’re serious about picking the best hat for you, it’s necessary to have a solid understanding of all the parts of a cap. Keep reading, and by the end, you would have gained expert knowledge about how each part of a cap is helpful to you for all your needs!

NOTE: This post is about PARTS OF CAP. Visit this post, if you’re looking to learn about the PARTS OF HAT.

What is a Cap? 

what is a cap

A cap is a headwear designed with a crown that is close-fitting to your head and a peak projecting in the front.  They come in various shapes and styles, and baseball caps are the most commonly used caps by people. They are used for sports,  comfort, as a fashion statement, advertising purposes, cultural habits,  safety, and also as part of a uniform. Like we have already said, caps are used for all reasons with no holds barred.

Difference Between Cap and Hat

Also mention another article (Parts of Hats) here, remember some confused people will be looking for hats in this article.

There is a clear dividing line between parts of a hat and a cap. Generally, people describe a cap as a type of hat. The hat is an umbrella term that describes both hats and caps.

But to be crystal clear, hats refer to the headwear designed with a crown and a  brim encircling it to provide a greater degree of shade.

A cap refers to a headwear with a close-fitting crown and a visor ( also called bill or peak)  projecting only in the front to provide shade to the face and neck along with many health benefits.

The most distinctive feature between a cap and a hat is the bill or the brim, respectively. Check out to know the distinctive features of hat vs. cap.

Parts of a Cap

Won’t it be surprising if the button of the cap or the underbill serves particular functions? Let’s get down together to know the A-Z detail of a cap. 

1. Crown

hat crown

The crown of a cap refers to the dome-shaped part of the cap which covers your head and holds its shape with panels. Panels are nothing but the smaller triangular fabrics which are stitched together to form the crown. A crown is usually built with 3, 5, 6, and 7 panels. They are designed in both structured and unstructured shapes.

2. Profiles

cap profile
various hat profiles

The cap profile refers to the height of the crown and describes how high or low it is. There are three types of profile, low, medium, and high.

  • Low Profile Caps: A low-profile cap usually is designed with a crown that is 2-3 inches tall and fits closer to the head. They are mostly designed with unstructured, lighter crowns and are a great option for people with small heads, women, and kids. When pulled down tight, the brim rests on your forehead and gives a sharper look.
  • Mid Profile Caps: A mid-profile cap is designed with a crown that is 3-4 inches tall and comparably has a higher crown height than lower profile caps. They are designed with both structured and unstructured crowns. When pulled down tight, the brim rest approximately on the top of your brows.
  • High Profile Caps: High-profile caps are the best option for people who have voluminous hair and bigger heads. The height of the crown is usually more than 4 inches tall and offers more space to the head.

High-profile caps makes a bolder statement and make you look more obvious. When pulled down tight, the brim rests nearly to your eyes; however, people love wearing their flat brims facing upwards.

Check out to learn more differences between high, medium, and low profile caps!

3. Panels (Front, Side, and Back)

cap panel
hat panels
  • 3 Panel Cap: 3-panel caps, also recognized as cyclist caps, are designed with only three panels to form the crowns. As mentioned earlier, panels are the smaller fabrics that are stitched together to form the crown.The crown is stitched with three panels running from front to back,  offer a more tailored fit and adequate space for the head size.
  • 5 Panel: 5-panel caps refer to the caps, which are designed with 5 panels to form the crown. They were widely popular in the early 20s’ for wearing sidewards and backward. With two rectangular-shaped panels running from center to back,  two semicircular, larger panels on each side, and one panel in the front, 5-panel caps offer a snug fit.
  • 6 Panel: The distinctive feature of a six-panel cap is its crown which is stitched with six panels and resembles an umbrella when seen from the top. The seam which is running from the middle to the bottom of the crown is another telltale sign to find a six-panel cap quickly. The more panels it has, the more extra room it provides for the wearer’s head. 
  • 7 Panel: To be clear, the 7 panel is a combined style variant of the 5 and 6-panel caps. A 7-panel cap looks like a 5-panel cap from the front and a 6-panel cap from the behind. These 7-panel caps are hugely popular among the family of baseball caps since they offer a more roomy fit to the wearer’s head. Additionally, they are designed with flat brims, making the embroidery design on the front of the crown more obvious.
  • Mesh Panels: Mesh panels refer to the ball caps, designed with mesh in the back to provide mind-blowing breathability and keep the wearer’s head sweat-free. Caps with mesh panels are an essential summer staple for the wardrobe. Trucker caps are usually designed with mesh back and flat brims.

4. Closure

hat closure

Closure refers to the closure type of a cap, which determines the overall fit of the cap to the wearer’s head. They are two types, adjustable types, and non-adjustable types.

  • Snapback: Snapback straps are plastic snapping straps that are designed at the back of both hat linings. Snapping straps consist of a male part and a female part which can be interlocked together when snapped and enables one size fits all style. Snapback strips are fun to handle, easy to wear, resistant to wear and tear, and mostly found in trucker hats.  They are also called dome fastener,  press stud, popper, snap, and tich.
  • Strapback: A strap back closure solely mentions a closure with straps mostly made up of leather, fake leather, nylon, and other materials. They are fastened with the help of a metallic or a brass buckle. With strapback hats, you don’t need to worry about the size since they are always found in one size fits all style caps and can be adjustable to any wearer.
  • Velcro (Hook and Loop Closure): Velcro straps, also called hook and loop fasteners, are durable, mostly made up of nylon and polyester. The hook side is rougher with pointy hooks, while the loop side is softer with hairy loops. When these components are snapped together, they provide a comfortable and snug fit to the wearer. It is very easy to wear by sealing and ripping quickly, and is mostly a great option for children.

Check out to learn more about hat closures.

5. Visor/Bill (also known as Peak)

baseball visor

The visor is a projecting part in the front of the cap and is also called a bill or a peak. The main purpose of the visor is to protect the eyes from UV rays and prevent sunburn.

In the earlier days, bills were made up of cardboard and didn’t adapt to washing. But today, the visor is made up of plastic and sewn with the fabric to hold the shape for a long time.

Bills come in a variety of styles, such as

  • Long bill
  • Short bill,
  • Snapping bill,
  • Flat bill,
  • Curved bill
  • Structured bill
  • Distressed bill
  • Sandwich bill
  • Piping bill

Isn’t that mind-blowing? Check out to know more types of bills.

6. Underbill

cap underbill

The underbill of a cap is defined as the underside of the bill, which mostly comes with darker colors like black, brown, and green. The main purpose of including a dark-colored underbill is to reduce the sun glare and improve the vision to see the sky or a ball’s flight.

7. Eyelets

cap eyelets

Eyelets are embroidered holes designed on each panel of the cap to enhance breathability, provide more ventilation and prevent a sweaty scalp. Eyelets are sewn with a bordered edge or can be punched with metal rivets.

8. Sweatband

cap sweatband

Sweatband might be the most favorite part of the cap of many people. The sweatband is a band lined to the inner edge of the cap and prevents sweat damage. It is usually made up of fabrics like leather or any other moisture-wicking fabric.

They draw away sweat and prevents it from dripping to your brows while you’re at the gym or doing any other activity. Modern sweatbands are also designed with increased elasticity and provide a comfortable fit.

9. Top Button / Squatchee

cap top button

The button at the center of the top crown of the cap is called a squatchee. It is also called the squatcho. In earlier days, the purpose of the button is to hold the panels together at the top and cover up the seam. Today, it is often used as a decorative element on the top of the cap.

They are mostly made up of metal which is covered by the matching fabric of the cap. Some brands even print their logos on squatchee for advertising purposes.

Is the button hurting you whenever you want to put on your headphones? Check out how to remove the button on the baseball cap, along with its interesting history!

10. Buckram

hat buckram

The buckram is the stiff inner lining of the cap, which is inserted into the front panels of the cap. The main purpose of the buckram is to provide a structured fit to the crown and provide the right profile and fit. Buckrams of caps are mostly made up of stiff cotton, linen or horsehair, to provide shape.

Difference Between a Structured and Unstructured Cap?

Unstructured caps give a loose, relaxed fit, while structured caps look sharp, crisp, and a more chosen option for embroidery, sports players, and other occupations.

In a structured cap, the inner crown is inserted with a buckram and supports the inner panels, and makes it stand stiffer on your head. Buckram is not used in the unstructured cap, like dad caps, and tends to be softer and offer a relaxed fit. Learn more about structured and unstructured caps.

Additional Features

Ponytail Hole / Cross Ponytail

ponytail baseball cap

The large opening at the back of the cap above the closure is called a ponytail hole. A ponytail hole in a cap is the most advantageous feature for women and men to slip out their ponytails without the hair strands disturbing them.

The criss-cross ponytail opening is a more versatile feature than the standard ponytail hole since it enables you to wear the ponytail or messy bun at any level. They add more comfort with a tangle-free closure and enhances the sporty look.

Pom Pom

pom pom baseball cap

Pom-poms are the cutest embellishment on a ball cap for decorative purposes. They are stitched on the top or the sides of the ball cap. Mostly, they are made up of faux fur and are soft when you touch them. Pom-poms caps are mostly used for cheering up for your favorite team and as a fashion accessory to compliment your outfit’s look.

Ear Flap

ear flap baseball cap

As you might have already guessed, earflaps on caps are to keeps your ears warm and protect them from the sudden gust of cold wind during winters. Caps are also designed with a snap button to hold the earflaps up when not needed. A  cap with an earflap is a must-have winter staple and is an easy throw-and-go option for any outfit.


ring baseball cap

Some ball caps are pierced with metal rings on the bill and the front of the crown. It is a K-pop style that is getting widely popular among teens.  At first, the ring dad hat was commonly worn by V during the wings tour. Later the ring caps were popular all over Instagram and are now enjoyed by everyone, especially the BTS army!


pocket baseball cap

Caps have grown more way beyond impressive by keeping pockets in them! Yes, you heard that right. They are designed with pockets in the inner crown, which enables the wearer to store not one or two, but many little things like a key, safety pin, emergency cash, paper, and clutches, etc.

parts of a cap info

Final Thoughts

By now, you would have been mind-blown, knowing the amazing functionality of each and every part of the cap. The baseball caps are so ubiquitous in American culture that there’s nothing to be surprised about, even when it’s called the national hat!  The affordability of the cap with awe-inspiring functionality and versatility made it stand strongly as a modern style lexicon through the centuries.

Was this post helpful?

This Post Has 0 Comments

Leave a Reply

Your email address will not be published.

Back To Top