Why Do Running Shorts Have Liners? Find Out Here

Why do running shorts have liners? The simple answer is comfort, but there’s more. Over time, many runners and non-athletes ask this same question as they wonder why the extra layers of fabric are necessary.

Luckily, one thing they all agree on is liners are beneficial for runners, and they can help to improve performance.

This guide explains why running shorts have liners and what you can do if you don’t like liners.

What are running shorts?

Running shorts are a type of athletic shorts that are made with a blend of linen and another fabric, usually polyester.

They are designed to be lightweight and breathable, making them ideal for running or other forms of exercise. 

These shorts often have a built-in liner or brief to provide support and comfort. They also come with reflective details to help keep the wearer visible in low-light conditions. Most runners and other athletes opt for this clothing for these very reasons.

Furthermore, linen in running short is a natural fiber known for its absorbency and strength, while polyester is a synthetic fiber known for its durability.

This combination makes for a pair of shorts that will keep you cool and comfortable while you are working up a sweat. Some running shorts also have pockets for storing small items such as keys or energy gels. Wearing running shorts with liners is always a win-win.

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Why do running shorts have liners?

why do running shorts have liners

Running shorts with liners are designed to make you feel relaxed and comfortable while running without underwear (which some people prefer). 

But that’s not all. The liner also helps to wick away sweat and moisture from the body, keeping the runner or user dry and comfortable. 

It provides a bit of extra padding and support for your muscles. It also helps to reduce fatigue and friction and prevent injuries. 

The liner can also help keep your shorts in place so that they do not ride up during a run. And finally, it can add a bit of extra warmth on cold days or in cold climates.

Overall, running shorts that have liners are more ideal for physical activities like running and workout sessions in the gym. They are built differently and are far better than regular underwear.

Are lining in running shorts necessary

Yes, they are.

Most running shorts have built-in liners and that alone shows how useful it is. Runners also find that liner shorts help to keep them comfortable during their runs. This is one of several other benefits.

However, if you’re not comfortable with liner shorts, it’s perfectly fine to wear a separate pair of underwear underneath your running shorts, e.g, compression shorts.

Although running shorts with linen are necessary, you still hold the choice of wearing what makes you most comfortable.

SEE: Why Is Underwear Called Drawers?

Do all running shorts have liners?

Some do, and some don’t.

It really depends on the brand and style of the short. Besides, some people prefer shorts with liners because they feel it provides more support and comfort, while others find that they can get by without one.

Can you cut the liner off running shorts?

Yes, you can.

Many people do this to make the shorts more comfortable. However, it is not recommended as it can cause the shorts to chafe. If you choose to cut the liner off, ensure you wear a good pair of running underwear to avoid any genital chaffing issues.

Also, if you’re worried about the raw edge of the fabric after cutting off the liner, you can always sew a new seam to finish it off.

Can men’s running shorts have liners?

Yes, they can.

Liners are a type of built-in underwear that helps to prevent chafing. There are two main types; the thin-loose-knit, which is breathable and not-easily-seen while you’re running.

The second is quite similar to compression shorts, and it’s available in different lengths, which means that others can see the liner as you run or work out. They both provide an extra layer of protection and help to keep everything in place.

That said, some men’s running shorts come with removable liners, while others do not. If you prefer to wear your underwear, make sure to choose a pair of shorts that don’t have a liner.

Why do men’s shorts have netting?

The reason is simple. First, netting provides ventilation, which can be especially helpful in hot weather.

Also, it helps men’s shorts dry more quickly if they get wet and provide support where they need it the most- the crotch.

SEE: Here Are The Reasons Why Underwear Are Important


Can you wear undies with running shorts?

Yes, you can. But it’s better not to. The reason is that It can obstruct airflow around your genitals and lead to discomfort. 

How short should running shorts be?

2-inch – 9-inch inseams.

Shorter running shorts are best for running or racing, while longer ones help to provide more coverage and are ideal for physical activities asides from running.

What do male athletes wear under their shorts?

Compression underwear (lycra-type). This is primarily because they provide better support.


Running shorts are designed to be comfortable and allow a full range of motion while you run. The liner in the shorts helps to keep you comfortable by providing a barrier between your skin and the fabric.

If you need to make your run comfortable, running shorts with liners add a bit of extra support and padding to help you achieve your goal.

Next time you’re out shopping for running shorts, remember to choose the ones that come with an inbuilt liner. You’ll be better with it.

Thanks for reading.

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