Why Do Men’s Underwear Have A Hole? – Explained

Have you ever wondered why men’s underwear have a hole in the front? This is a fascinating topic that deserves some exploration.

In this article, we will delve into the history of this design, its practical use, and some interesting facts. So, let’s start by answering the main question.

According to Sheath Underwear, the hole in front of men’s underwear, also known as a fly, is designed for easy access when urinating, providing convenience for men. However, surprisingly, only 20% of men who wear boxers actually use the fly feature during bathroom breaks.

Most prefer to pull down their boxers entirely instead. It is worth noting that not all men’s underwear have a fly, but it remains a common design feature in many brands and styles.

Now that we’ve answered the main question, let’s dive deeper into the history and practicality of this design.

Check out this Youtube video: “7 Underwear Questions You’re Embarrassed To Ask,” and finally learn the answer to the age-old question about why men’s underwear has a hole in the front.

Why Do Men’s Underwear Have a Hole in the Front?

The hole or opening in the front of men’s underwear is called the “fly”. It is designed to provide an easy and convenient way for men to urinate without having to remove their underwear completely.

According to MeUndies, a popular underwear brand, the fly can either have a button to keep it securely closed or can be made of self-closing fabric.

The inclusion of the fly in men’s underwear has a practical purpose and has been a standard design element for many years. It reduces the need for men to undress when using the bathroom, which can be especially helpful in public restrooms or other situations where privacy may be limited.

In addition, the fly can allow for greater comfort while wearing certain types of pants or other clothing items.

A Brief History of Men’s Underwear

Men’s underwear has gone through a significant evolution over the years. From animal skins to silk and cotton, men have worn various types of undergarments throughout history.

In the late 19th century, a New York-based company called Cooper Underwear introduced a one-piece union suit that covered the entire body, from the neck to the ankles, with a buttoned flap in the back for easy access to the buttocks. This design, however, proved to be uncomfortable and inconvenient, leading men to shorten the union suit, eventually leading to the birth of the undershirt and shorts.

The aperture in men’s undergarments, commonly referred to as the fly, serves a functional purpose of providing an easy access to urinate without the hassle of removing the boxers completely. This feature has become a staple in men‘s underwear, and many brands have highlighted its utility on their websites.

The convenience and practicality of this design make it a popular feature in men‘s underwear.

The Invention of the Fly

The fly in men’s underwear was invented in the early 20th century by Arthur Kneibler, a designer for Cooper Underwear. He introduced a fly-front design featuring a vertical opening with buttons for closure.

This design was more practical than the one-piece designs and quickly became popular. The traditional button closure was later replaced by a more modern and secure zipper system.

Nowadays, most fly-front underwear has a horizontal opening with a fly panel that provides additional support and comfort. Interestingly, the fly serves a crucial purpose – it allows easy access for men to urinate without having to pull down their boxers completely.

The Practical Use of the Fly

The fly in men’s underwear has a practical use – to make urination more convenient. Most men prefer to use the fly as it saves time and effort compared to taking off their underwear entirely.

The fly allows them to easily and quickly access their private parts without exposing themselves entirely. This is precisely known as a fly as explained by some underwear makers on their website.

Interesting Facts About Men’s Underwear

  • The opening in men’s underwear, commonly referred to as a fly, serves the crucial purpose of facilitating the ease of access for men to urinate without the need to remove their underwear. According to www.iflscience.com, this simple opening is necessary for men’s convenience.
  • Boxer shorts were invented in the 1920s by a man named Jacob Golomb to provide a looser, more breathable alternative to uncomfortable woolen underwear.
  • In Austria, the oldest pair of men’s underwear ever found dates back to the 15th century. Made of linen, it had a string to tie at the waist.
  • The global men’s underwear market is expected to reach $40 billion by 2024.

The opening or fly in men’s underwear primarily exists for convenience when using the restroom. Rather than having to remove their entire underwear, men can easily access the area needed for urination.

This simple addition to men’s underwear has become a staple and has been included in various types of men’s underwear. Boxer shorts, considered an alternative to uncomfortable woolen underwear, were invented by Jacob Golomb in the 1920s.

The oldest men’s underwear ever found was discovered in Austria and dates back to the 15th century. It was made of linen and had a string to tie at the waist.

Today, the men’s underwear market is a booming industry, with an expected global worth of $40 billion by 2024.


So, as we have learned, the hole in the front of men’s underwear serves a practical purpose by providing a convenient opening for men to relieve themselves without having to pull down their boxers. It has been an essential part of men’s clothing and is also referred to as the fly by popular underwear brands.

As with other clothing innovations, we can expect to see more advancements in men’s underwear design in the future.


Frequently Asked Questions

Why do men's underwear have a pocket in the front?

The pocket, technically known as fly, allows men to easily urinate without pulling down their boxers.

What is the hole in the front of men's boxers for?

The hole, also called fly, makes life easier in the restroom as it can be easily opened for urination without removing the underwear.

Why do my underwear get holes in the front?

The front of underwear usually gets holes due to constant urine stains. Additionally, using bleach on them further weakens the fabric.

What is the fly pouch in men's underwear for?

The fly pouch or adjustable pouch in men's underwear is designed to prevent skin-to-skin contact, which reduces irritation and significantly eliminates chafing issues.

Jonathan B. Delfs

I love to write about men's lifestyle and fashion. Unique tips and inspiration for daily outfits and other occasions are what we like to give you at MensVenture.com. Do you have any notes or feedback, please write to me directly: [email protected]

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