Do You Wear Underwear Under A Bathing Suit?

If there is one aspect of recreation that requires lots of questions, is swimming. This is as a result of the fact that we want to be conscious of the kind of swimwear we rock to the pool as to if they are perfect for such occasion or not.

More so, when it comes to swimming as well, some guidelines must be followed as stipulated by those in charge of the pool. That is why we have got to be watchful of what we put on. Like a question asked recently which says, do you wear underwear under a bathing suit?

No, you do not wear underwear underneath a bathing suit. Although, there are exceptions that could warrant you wearing underwear to swim. However, in the normal sense or what is accepted in the swimming standard, wearing underwear is not acceptable.

There are quite some reasons why you can not wear underwear to swim in the water. And there are a few reasons why you can do such. Now, we are going to look at both reasons separately so you get to know the right thing to do.

Why You Can Not Wear Underwear Under A Bathing Suit?

1. It Comes With Inbuilt Liners

This is one of the major reasons why you can not wear underwear under a bathing suit. A bathing suit in general comes with some sort of liners that keeps the private areas private. By this, we are referring to swimsuit bottoms. Not just that, these inbuilt liners also act as an underwear kind of.

So you do not have to wear something underneath your bathing suit again. The inbuilt liners attached to it by the companies have already done justice to that. That is why you get to see that one wears only the bathing suit to swim without fear of the private areas being exposed.

As for the bra, the bathing suit is produced with either an underwire bra or normal bra cups. With these, your private areas will not be visible to the public.

Even if the producers of the bathing suit do not attach any of the aforementioned cups above, they will be a sort of inbuilt lining that keeps those private areas from the eyes of the public. So in all, there isn’t any point in wearing underwear in the suit.

2. It Will Make You Uncomfortable

A second reason why it is safe to say you should not wear underwear under a bathing suit is that it will make you not comfortable. If we are to stress on swimming actually, the goal would be to be able to savour each moment at the pool as we let loose all the stress endured for long.

And being some sort of recreational activity, you do not have to wear something that wouldn’t restrict you from having that fun and relaxation you so much wish to. Because of that, those who came up with the swimsuit concept did so with the belief that what they are to produce should be something that would be free and wear that will enable you to swim well.

And they came up with the thought of attaching a liner to it just like it is with your underwear. This way, you will feel very comfortable and swim to your satisfaction. Unlike when you put on underwear for swimming. You will certainly not be so comfortable in moving around with the underwear not to mention swimming comfortably in the bathing suit.

3. Chlorine

Have you ever asked yourself why some swimsuit manufacturers tend to produce chlorine-resistant suits? That is because chlorine has a way of destroying bathing suits and rendering them completely useless after a while. Now, this is one of the reasons why you should not wear underwear under a bathing suit.

The underwear is not safe such that it should be exposed to chlorinated water. So you should wear just the bathing suit without wearing underwear underneath the suit.

If you are to wear the bathing suit, wear it plain with nothing attached under it. Let me quickly tell you why some pools or a majority of pools have chlorine in them. The reason why such a thing exists is that chlorine help to keep the water free from germs and other bacteria.

Without the chlorine, these pools would be flooded with so many germs and bacteria that would pose to be harmful to our health. And the best way they felt they can get rid of the germs and the bacteria is by applying chlorine. And the chlorine, on the other hand, ruins bathing suits. Hence, the need for chlorine-resistant bathing suits.

4. Visibility

Here is a fourth (4th) reason why you can not wear underwear under a bathing suit. The underwear might likely be visible to all and sundry. imagine wearing your underwear under a bathing suit like that of a one-piece bathing suit. The underwear will certainly become visible.

And that aside, there isn’t any point in wearing underwear again when you are aware that the bathing suit comes with some sort of inbuilt liner which has taken the place of underwear already. So, you can not wear your underwear into the water. Go with just your bathing suit on your body and nothing else.

To add, wearing underwear can make you uncomfortable too. It will make you uncomfortable to a greater extent. This has been mentioned or dealt with above. And while making you uncomfortable, you might want to arrange it or try to position the underwear in the right way.

In the process, you’re making the underwear to be visible such that those at the pool might get to see the underwear you have on. Now, this is what I am trying to say. To be on the safer side, you should avoid wearing underwear so it isn’t visible.

5. Transfer Of Dirt

This is the last reason we are going to adequately look at. Transfer of dirt is one other reason why we have said you should not have to wear underwear in your bathing suit. It is very much possible to have dirt being transferred to your underwear easily.

Wearing your underwear will get the underwear stained or dirty from the surroundings of the pool or your sitting environment. Except you intend to have the underwear trashed after going to the pool because you are not only damaging the underwear, but you are as well getting it filled with dirt all over.

And the question is, why subject yourself to that torture? Rather than wearing underwear that will be filled with so much dirt, why don’t you put on the bathing suit only so you save yourself the stress of having to wash your bathing suit? Also, you will be saving yourself from discomfort in the long run.

The best thing you can do for yourself is to go swimming with just the bathing suit accessories. Underwears will get dirt all over and should be avoided.

Why You Can Wear Underwear Under A Bathing Suit?

It is at this point we are going to look at three (3) reasons why you can wear underwear under a bathing suit. These three reasons are reasons that we can not overlook. They are more than enough reason for you to wear underwear underneath them.

These reasons include;

  1. Period Stains
  2. Loosed Suits
  3. Revealing

Let us look at these three (3) reasons one step at a time extensively.

1. Period Stains

Period stains can cause one to need underwear to be worn along with the bathing suit. This can take place in different instances. Here is one. You can wear any underwear under your bathing suit if you do not know the exact time you are experiencing your monthly flow.

Read Also: How To Get Period Stains Out Of Bathing Suit

If you are in dire need of relaxing in the pool and having those stresses washed away by the water while at the same time in expectation of your flow, you can put on underwear in a bid to be fully prepared for what is coming. It is better to be ready than to be caught unaware. This is one instance that would require you to wear underwear.

Here is a second instance. Having your monthly flow would also require you to wear underwear to the pool or beach. That is if the individual has started having monthly flow and would love to hit the water. So you will be needing the underwear for the sake of the flow.

It is either you attach a pad to the underwear you want to put on, or your wear a tampon. There is one other method that involves wearing of menstrual cup. But all the same, it is safe to wear underwear under the bathing suit to be protected and not get embarrassed in any way.

2. Loosed Suits

This is the second reason we are going to look at as mentioned above. Loosed suits can make you wear underwear under your suit. But all the time, this is done deliberately so as not to get embarrassed when the loose suits get loosed more and more.

Read Also: How To Fix A Bathing Suit Top Too Big With Steps

Of course, it happens. There are some moments that you would want to go out and enjoy the cosy feeling of the water. And perhaps, it happens that the bathing suit you have in your wardrobe has begun losing.

So instead of letting that deter you from fulfilling that desire, you get yourself ready to wear underwear underneath the bathing suit. In that manner, you are expected to wear undies right in the bathing suit.

Failure to do that might result in you getting so embarrassed from what might likely play out after that through mistakes or carelessness. But if you have other bathing suits, you can as well go with them or have them worn to swim. In a situation where you do not have any other than the loosed one, you should wear underwear for protection.

3. Revealing

To crown this session, we are going to discuss the reason why you can wear underwear under your bathing suit. It is no other reason than for the sake of making the bathing suit not to be too revealing.

Not all individuals love putting on a bathing suit that is kind of revealing. However, when you happen to be gifted or to purchase, or to have a bathing suit that seems to reveal more than it should, then you must wear your underwear in that bathing suit. Unless you choose not to.

Also Read: Most Revealing Swimsuits

If you do not mind wearing the revealing suit that way, you are more than free to. The decision is always yours to make. Well, if you are the type that knows you can not wear such a thing out, do yourself a huge favour by getting your underwear in place, then putting on your bathing suit. With this, your private areas would no way be revealed to all.

Since revealing bathing suits show more than its necessary, endeavour to wear your underwear inside the suit. To avoid stories that will get you in sober moods. For example, the revealing bathing suit showing a lot more than it is built for.

Recommended Bathing Suit Underwear

The right underwear for your bathing suit will help you stay confident and comfortable all day long. You want your swimwear to fit like a second skin. The problem is, when you go from the steamy sauna to the cold ocean, well, you get the picture.

Even worse? You can’t wear underwear underneath most swimsuits, so what are you supposed to do if Mother Nature decides to call while you’re out and about?. You can wear swim bottom underneath your bathing suit.

Below are the things to look out for when buying a swim bottom and the best bathing suit underwear (swim bottoms) you can purchase.

Buyer’s Guide for Best Bathing Suit Underwear

The right underwear for your bathing suit will help you stay confident and comfortable all day long.

Here’s what you should look for;

1. Chlorine Protection

Chlorine is a chemical that’s tough on fabrics. Because of its bleaching properties, it can damage the color dyes of your bathing suit and cause fabric breakdown over time. The more time you spend in a pool, the more prevalent these effects will be.

The best way to protect against chlorine is to choose a material that’s resistant to it. Fabrics like polyester and nylon are usually recommended as chlorine-resistant. If you want something that’s even more chlorine-resistant than that, try PBT (Polybutylene terephthalate).

It has been designed to withstand the effects of long-term exposure to both saltwater and chlorinated water, making it perfect for competitive swimmers or anyone who spends an abundance of time in the pool or ocean each season.

2. Comfortable crotch

Whether you’re new to the world of swimsuit underwear or you’re a seasoned swimmer who’s just looking for some new undergarments, you’ll want to consider some of the qualities that go into making a good pair of swimsuit underwear.

First and foremost, they need to be comfortable enough to wear in water without irritating your skin. Cotton is one popular material because it’s soft and breathable, but other materials like polyester are also good options if they’re stretchy and soft. Because this type of underwear will be exposed to water more often than regular underwear, it’s important that they’re made from an absorbent material as well.

3. Minimal seams

An uncomfortable seam can lead to chafing and irritation. It’s a good idea to look for swim underwear with minimal seams, especially in the hip area. Often, the main seams running down the front or back of the suit will be covered with tape to reduce rubbing.

If they are not taped, look for thicker fabric or flatlock stitching—seams that are glued together rather than stitched can become loose and irritate the skin over time. Some seamless swim underwear is made using knitting technology that creates a single piece of fabric even if it has a patterned design.

4. Choose a light material

While there are many materials from which to choose, cotton is the tried-and-true best choice. Cotton fabric is breathable and good at wicking away moisture, so it will dry quickly. Depending on your activity level, you may want to choose a more moisture-wicking material like nylon or polyester. If you’re going for the classic look of boxer briefs, go for a cotton/polyester blend that has moisture-wicking properties but still provides coverage and support.

When choosing a pair of swimsuit underwear for women, consider fast-drying silk or satin fabrics. These materials will help protect against chafing while showing off your feminine figure under a bathing suit or summer dress. Silk also allows air to pass through easily and dries quickly in case you take an unexpected dip in the ocean or poolside hot tub.

Best Bathing Suit Underwear

1. Beautyin Women’s Ruched Swim Bottoms

beautyin Women Tummy Control Black Bikini Bottoms Bathing Suit Bottoms Shorts


Revel in the comfort and fit of these Beautyin women’s Ruched swim bottoms. These full-coverage brief swim bottoms are made from a swim fabric that offers high performance. The moisture-wicking and quick-drying fabric is perfect for all-day wear. The ruched detailing in the back creates a more flattering silhouette while providing additional coverage.

These bottoms also have a wide waistband with an elastic rise that hugs your hips to prevent slippage. The drawstring closure allows you to customize the bathing suit to your comfort level. These women’s bottoms also feature quadruple-stitched side seams, as well as stitching at leg openings for added durability.

The beautyin Women’s Bikini Bottoms Ruched Swim Bottoms features an alluring geometric design, flattering fit and feel. Made from a super soft and durable high-quality fabric, it also minimizes tan lines. Available in multiple colours, the plus-size cute swim bottom is ideal for your next vacation or weekend trip.

2. Catalina Women’s Standard Boyshort Banded Bikini Swim Bottom

Catalina Women's Standard Boyshort Banded Bikini Swim Bottom Swimsuit, Black, Extra Large


Catalina’s Women’s Boyshort Banded Bikini Swim Bottom is an excellent choice for the fashionable, active woman. The pull-on design and hand wash construction make this bottom simple and comfortable to wear throughout the day. With a wide waistband for fashionable design, it provides a flexible fit that moves with you during your busy day. This bottom is made from delightfully soft Nylon/Lycra materials.

The classic boy short silhouette offers moderate rear coverage and minimal leg coverage. The wide waistband comfortably stays put on the hips during aquatic activities, while the cut and abrasion-resistant fabric ensure lasting wear. This swim bottom features a hand wash only construction.

3. Aleumdr Womens Lace Hollow Out Swimsuit Tankini Bottom

Aleumdr Women Plus Size Pants Swimwear Swimsuit Hollow Out Lace Stretch Puls Size Mini Boardshort Black 3XL 22 24


Your active lifestyle will bring you to new places and give you new adventures. Suit up for your next lap with the Aleumdr Women’s Lace Hollow Out Swimsuit Tankini Bottom Swim Board Shorts. This cute swimsuit bottom is made out of durable, elastic-reinforced fabric with a wide elastic waistband. This swimsuit bottom makes you look great when your water and land workouts heat up.

These women’s swimsuit bottoms are cute, stylish and perfect for high-impact activities. Made of nylon and spandex, this bathing suit bottom features a wide elastic waistband with ties in the front. The lightweight fabric dries quickly, ensuring lasting comfort. These shorts can be worn as part of a swimsuit or on their own while swimming or boating.

4. Body Glove Women’s Smoothies Ruby Solid Bikini Bottom Swimsuit

Body Glove Women's Standard Ruby Solid Bikini Bottom Swimsuit, Smoothies Black, Medium


The Body Glove Smoothies swimwear collection offers a variety of styles to suit your unique taste. The Smoothies Ruby Solid Bottom is perfect for mixing and matching with any of our prints or pairing up with a matching bikini top. To ensure lasting quality, this durable swimsuit has been constructed out of 80% nylon and 20% spandex. It has a pull on closure and hand wash only, making it easy and convenient to care for.

This solid red swim bottom is the perfect addition to your collection. Wear this beaut with any solid pattern top for a straight-on pop or mix it up with printed styles for a fun look that’s as beach-chic as it is lovely.

Do You Wear Underwear Under A Bathing Suit – Conclusion

In the right sense, underwear should not be worn under a bathing suit as a result of some valid factors. But on other occasions, the underwear can be worn when the situation demands such a piece of clothing to be worn.

Conditions like menstrual cycles loosed suits and revealing bathing suits can make individuals wear underwear under their bathing suits. Anything other than that should not be welcomed so as not to cause inconveniences.


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. 

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