April 3, 2024

Five Star Sport

Sports Tips & Best Gear Reviews

Are You Supposed To Wear Underwear With Swimsuits? No!

5 min read

Swim trunks are a component of swimsuits that are primarily available to men. As a result, they are frequently made of comfortable, breathable, and hydrodynamic fabrics that are designed to get wet without obstructing the swimmer.

So, should you put on underwear over your swimsuit? Typically, wearing underwear under your swimsuit should never be necessary. If it is a one-piece, you can skip the bra and bottoms. You generally shouldn’t wear underwear underneath swimwear, whether it’s swim trunks, swim shorts, or swim briefs.

Swimsuits VS Underwear

Swimwear is made from specific types of materials that are water-safe and resilient to harsh pool chemicals like chlorine. Additionally, they dry out quicker and absorb less water.

The majority of undergarments that aren’t made to be worn in pools are made of flimsier materials like cotton, which are easily damaged by pool water.

Regular underwear will also soak up a lot of water, increasing drag and making swimming more challenging. The length of time it takes for the garment to dry will also increase with additional water retention. 

There is no need to wear underwear because swimsuits are designed to do so. The bust and crotch regions of women’s swimsuits typically have additional padding and a special lining.

Both are included to increase comfort and block the visibility of one’s private areas.

Here’s how to look for lining: take your swimsuit and turn it inside out. Under the primary layer, look for a second layer of material that is typically white but may also be another color. With your fingers, try to separate the second layer of the material; the lining ought to come apart without difficulty.

Recreational swimwear tops may also have an underwire for added support instead of a bra.

Some cutting-edge swimsuits for competitive athletes are made of thicker material rather than padding in the bust area to prevent any unintentional transparency.

Due to the fact that underwear isn’t designed to be worn in the water, it won’t hold up well in the pool. If you wear underwear in the pool, expect to see damage to the color/print and to the actual fibers, which results in more fraying and a worse fit. 

The same thing happens when you swim in the sea. Simply avoid it if you prefer underwear that fits well and looks good.

Can I Wear A Swimsuit As An Underwear

Although a swimsuit can serve as underwear, it is not advisable to do so. Over time, swimwear can chafe skin and grow uncomfortable.

With materials that are breathable, moisture-absorbent, pleasant to the touch, and comfortable to wear, underwear is made specifically for extended wear. Swimsuits worn as underwear are also more expensive and short-lived than underwear.

The following reasons, in brief, are why you should not wear underwear with your swimsuit:


Uncomfortable Skin Irritation

You run the risk of developing redness, rashes, and other skin irritations if you wear cotton underwear under your swimsuit. Moisture accumulates and increases skin sensitivity because the fabric does not dry as quickly as a swimsuit does when wet.

Visible Panty Lines

Let’s say that you combine your bikinis with leggings or a one-piece bathing suit. An excessive amount of water absorption causes underwear to become even heavier when wet, which increases the likelihood that it will show through your bathing suit.

Furthermore, underwear will undoubtedly be visible in an unsightly way if you are only wearing a bikini bottom or men’s swim trunks without pants on top.


Chafing happens when your skin rubs against the fabric of your swimsuit or underwear, causing irritation and inflammation.

Nobody wants that after a stress-free day at the beach because it frequently causes a rash or burn-like sensation in sensitive areas like the groin and inner thigh.

In order to minimize drag while swimming, swimsuits should ideally be form-fitting but not overly stretchy. 

Things become even less forgiving if you put a thin layer of clothing in between your skin and your bathing suit’s snug fit.

The two layers of fabric constantly rub against each other as a result of any movement, which causes chafing over time (much like when you wear socks backward).

What To Consider Before Choosing Underwear For Swim Trunks

Some people discover that wearing underwear underneath their swimsuit is more comfortable. If you prefer to wear underwear underneath your swim trunks, you are not alone.

But there are a few things to think about. Before choosing swimwear for trunks, keep an eye out for the following.

The Kind Of Wear

Boxer shorts are a good choice because they protect the sensitive areas better and maybe cooler in warm water than briefs or boxers.

Boxer shorts, on the other hand, can sometimes be cumbersome and take a while to dry when worn with swim trunks. Wearing something thinner, such as boxer briefs or low-rise briefs, might be a better option for you if this is the situation.

The Size Of Your Swim Trunks

Choose underwear that won’t be too loose if they are on the larger side and fit loosely around your waist to avoid feeling uncomfortable moving around inside your suit as you move in the water. Being covered in a bunch of wet fabric is the worst feeling ever.

Alternatively, if your swimsuit is pretty tight against your body (possibly one of those skimpier styles), check that your underwear isn’t too tight. You probably don’t want any wedgies to take place outside.

The Kind Of Fabric Used

You should also think about the type of fabric used to make your underwear. Since cotton absorbs moisture and promotes airflow, it is probably the most hygienic material to use because it keeps things fresh and prevents the spread of infections in hot, humid environments.

Look for lightweight options like boxer briefs made of a cotton/polyester blend or even pure polyester when choosing appropriate undergarments to wear underneath swim trunks.

These materials typically absorb less than their cotton equivalents, which results in faster drying times.

Final Thoughts

You shouldn’t have any problems this summer if you follow that advice. At the very least, it suffices to make you look good while swimming. Never forget that swimming is rough on the skin. Remember to maintain consistent hygiene and skin care regimen after a fun-filled day.

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