Are You Supposed to Wear Underwear Under Swim Trunks?

Swim trunks are part of swimsuits mostly available to the male folk. As a result, they’re frequently composed of fabrics engineered to get wet while being comfy, breathable, and hydrodynamic, so they don’t obstruct the swimmer. They differ from undergarments that may have a similar pattern because of the materials used.

Many often ask Are you supposed to wear underwear under swim trunks? No, you are not supposed to wear underwear under swim trunks. Swim trucks are made for aquatic purposes. Wearing underwear under swim trunks can ruin your cherished activities. 

Although you suppose not to wear underwear under swim trunks, you can still wear some underwear under them. People who wear it under swim trunks do so because of self-consciousness. This happens to the majority of men who feel insecure about their bodies. 

Why You Shouldn’t Wear Underwear Under Swim Trunks?

The simplest answer to the question; are you supposed to wear underwear under swim trunks is no. Even though many violate this and opt for wearing underwear swim trunks. Wearing underwear under swim trunks or a one-piece bathing suit can lead to a variety of problems, including:

1. Uncomfortable skin irritation 

Wearing cotton underwear underneath your swimsuit causes friction between fabric and skin, which can result in redness, rashes, and other forms of irritation. Because the fabric does not dry quickly like a swimsuit does when wet, moisture builds up and creates additional skin sensitivity.

READ MORE: Why Do Guys Wear Underwear Under Swimsuits?

2. Visible panty lines 

Suppose you wear a one-piece bathing suit or leggings with your bikinis key. Underwear that absorbs too much water becomes even heavier when it’s wet and therefore more likely to be visible through your bathing suit. And if you are wearing just a bikini bottom or men’s swim trunks without pants on top of them, underwear will definitely show through in an unsightly way.

3. Chafing

Chafing occurs when there is friction between your skin and your swimsuit or underwear fabric, causing your skin to become irritated and inflamed. It will often result in a rash or burn-like sensation in sensitive areas like the groin and inner thigh, and nobody wants that after a relaxing day at the beach.

Swimsuits should ideally be form-fitting, so they don’t cause drag while swimming, but they aren’t very stretchy either.  If you add an extra layer of thin clothing between the tight fit of your bathing suit and your skin, it makes things even less forgiving; this also leads to chafing over time as any movement causes the two layers of fabric to rub against each other constantly (like what happens when you wear socks inside out).

ALSO READ: Do You Wear Underwear Under A Bathing Suit?

What to Consider Before Choosing Underwear for Swim Trunks

Some people find it more comfortable to wear underwear under their swimsuit. You’re not alone if you’d rather wear underwear under your swim trunks, but there are a few things to consider when choosing underwear. Look out for the following before selecting underwear for swim trunks.

1. The kind of wear

Boxer shorts can be a good option because they keep the sensitive parts more secure, and they might be cooler than briefs or boxers in warm water. However, some boxer shorts can be bulky under a swim trunk and not dry very fast. If this is the case for you, try wearing something thinner like boxer briefs or low-rise briefs instead.

2. The size of your swim trunks

If they are on the bigger side and fit loosely around your waist, choose underwear that won’t be too loose either so that you don’t get uncomfortable shifting around inside your suit as you move in the water. There’s nothing worse than having a bunch of wet fabric bunch up on you.

Alternatively, if your swim trunks fit pretty snugly against your body (maybe they’re one of those skimpier styles), make sure the underwear isn’t too tight. You probably don’t want any wedgies happening out there.

3. The kind of fabric used

You also want to consider what kind of fabric your underwear is made from. Cotton is probably the best choice in terms of hygiene since it absorbs moisture and allows airflow; this will help keep things fresh and prevent any infections from developing in hot, humid conditions.

When selecting appropriate underwear for wearing under swim trunks, look for lightweight options like boxer briefs with a cotton/polyester blend or even pure polyester. These materials tend to absorb less than their cotton counterparts (which means less drying time).

But remember: even though polyester doesn’t hold onto water as much as cotton does when wetted completely through multiple pieces of washing, don’t get too excited about saving time by not having those drippy moments after swimming laps all night long at our local pool.

Best Underwear for Swim Trunks

It is not ideal to wear underwear under swim trunks, but if you insist on wearing underwear under it, there are appropriate underwear that can be considered. You cannot just wear regular underwear for aquatic activities. Regular underwear can easily absorb water which can make you heavy in water. Also, regular underwear can cause irritation and some other infections to your body system. Here are some suitable and appropriate underwear for swim trunks.

1. Trunk liners

These are typically built into the waistband of the swim trunks and provide a little extra support. Trunk liners are usually made of mesh, which allows them to dry fairly quickly.

2. Compression shorts

They are ideal for men who want extra coverage in the crotch area. Compression shorts typically have a snug fit that keeps everything tucked in place and offers support for your muscles.

3. Boxer briefs

This might be your go-to underwear style, so you’re probably wondering if boxer briefs can also work under a pair of swim trunks. The answer is yes, but only if you wear a longer pair of swim trunks over them; think about it, you don’t want them hanging out.

4. Swim briefs

This is one of the most popular choices among men who prefer to go commando (meaning they choose not to wear underwear). They’re designed specifically for swimming, making them lightweight and quick-drying with plenty of coverage at the front and sides.

5. Board shorts

In addition to being stylish, board shorts often have built-in liners that provide some level of support while keeping things tidy under your swimwear. It’s important to remember that board shorts are usually loose-fitting, so this won’t work as well for guys who prefer tight-fitting underwear underneath their clothes or swimwear (this style could result in chafing or other irritation).

Do Guys Wear Anything Under Swim Trunks?

While many men choose to go commando under their swim trunks, you can wear underwear or even a swimsuit under your swim trunks. As long as the suit isn’t too tight, you may notice no difference whatsoever.

However, if you’re planning on taking a dip in the pool or at the beach and then jumping back into your suit, wearing underwear will most likely lead to some discomfort: imagine what it’s like after being in wet clothes all day. It’s definitely not comfortable.

It’s also important to note that men wear different types of swimming attire. One type is board shorts (also known as surf trunks), which are designed for activities like surfing and tend to be made of looser fabrics than regular swimming trunks. The other type is jammer shorts, which are close-fitting and made for racing or competition purposes; these should always be worn without anything underneath them.

ALSO READ: Can You Wear A Pad Under A Wet Suit?

Can Girls Wear Underwear Under Swimsuits?

Can girls wear underwear under swimsuits? The answer is yes. Some girls do wear underwear under their swimsuits. With the rise of functional and modest swimwear, more women are opting to wear underwear under their swimsuits to provide additional support and coverage.

You can wear your underwear under one-piece or two-piece suits for extra coverage of your hips, derriere, and upper thighs. If you wish to wear underwear under your suit, we have some tips below that will help you make it work for you.

Do Swimmers Wear Underwear Under Swimsuits?

When it comes to swimming, you may be tempted to go sans underwear. Considering the amount of exposure swimwear gets from chlorine, it may seem more sanitary to forgo underwear. You can simply decide to wash your bikini or swim trunks every time you wear them instead. However, there are many reasons why wearing a swimsuit of some kind under your regular swimsuit is a good idea—and not just for sanitary purposes.

However, people who participate in competitive swimming generally don’t wear underwear under their suits because they want the fastest possible times. Speedo has even developed its line of skintight suits designed to minimize drag; these suits are so form-fitting that they basically double as underwear. 

Lastly, whether you choose to wear underwear under your swimsuit or not is entirely up to you. If you do decide to wear underwear with your swimwear, try to choose a lightweight and quick-drying pair such as boxer briefs or bikini briefs.

Conclusion – Are You Supposed to Wear Underwear Under Swim Trunks?

Whether you wear underwear under swim trunks is a personal preference. Some prefer not to wear underwear underneath, while others prefer to wear underwear underneath. If you choose to wear underwear underneath, it should be lightweight and breathable. For example, most cotton fabrics are not very breathable and may cause discomfort when you wear them all day long.

It’s not only a good idea to wear underwear under swim trunks. It’s an integral part of the design. The inner lining is there for more than just modesty. It also helps hold the swim trunks in place and prevents them from riding up or chafing.

Ultimately, whether you want something with extra padding or a classic bikini style is up to you and your comfort preferences. However, keep in mind that designs of regular underwear isn’t for swimming. Thankfully, there are underwear that can help you stay cool and dry by wicking away moisture.


You may see some products here which has either been used by us or independently selected by (obsessive) editors. As an affiliate of Amazon, Anything purchased through our links may earn us a commission at no extra cost to you. 

Leave a Reply

Your email address will not be published. Required fields are marked *