To wear under swim trunks, it is generally recommended to not wear underwear. However, some circumstances or personal preferences may call for wearing swim briefs or other swimwear designed for added comfort.

Whether or not to wear underwear under swim trunks largely depends on personal choice and comfort level. Swim trunks are a popular choice of swimwear for men, providing style and functionality for swimming and other water activities. But what should you wear under swim trunks?

The general consensus is to not wear underwear. However, there may be some cases where wearing swim briefs or other swimwear designed for added comfort can be a good option. Ultimately, whether to wear underwear under swim trunks or not is a personal choice based on individual preferences and comfort level. We will explore the considerations and options for what to wear under swim trunks.

1. Commando: Embrace The Free Feeling

Going commando under swim trunks offers a sense of freedom and liberation. By opting to forgo undergarments, you can enjoy a natural and unrestricted experience while swimming. However, there are a few things to consider before deciding to go commando.

Firstly, ensure that your swim trunks are made of a comfortable fabric that won’t cause any discomfort or irritation. Additionally, it’s important to maintain proper hygiene to prevent any potential issues. Regularly washing your swim trunks and maintaining personal cleanliness is essential.

Lastly, be mindful of the environment in which you’ll be swimming. If you’re participating in extreme water sports or engaging in activities that may require additional support, wearing undergarments might be necessary. Overall, going commando under swim trunks is a personal choice that offers a free and unrestricted feeling, but it’s important to consider your comfort and hygiene needs.

2. Swim Briefs: Classic And Supportive

Swim briefs are a classic and supportive choice to wear under swim trunks. They serve as a comfortable alternative to regular underwear and offer several advantages. Firstly, swim briefs provide extra support and coverage, ensuring a secure and confident fit.

Secondly, they are designed to dry quickly, preventing any discomfort from wet fabric. Additionally, swim briefs are made from materials that are resistant to chlorine and saltwater, prolonging their lifespan. Moreover, wearing swim briefs can help prevent chafing and irritation that may occur from rubbing against the rough fabric of swim trunks.

In conclusion, choosing swim briefs as an alternative to underwear offers both style and functionality, making them an excellent choice for any swimwear ensemble.

3. Boxer Briefs: Comfort And Coverage

Opting for boxer briefs under swim trunks can provide added comfort and coverage. Boxer briefs are a popular choice for many men as they offer a snug fit and support without being too restrictive. The stretchy fabric of boxer briefs allows for easy movement and ensures that everything stays in place while swimming or participating in water activities.

Additionally, the longer length of boxer briefs helps to prevent chafing and irritation that can occur when wearing other types of underwear under swim trunks. By choosing boxer briefs as a base layer, you can feel more comfortable and confident during your time at the beach or pool.

4. Jockstraps: Ultimate Support And Protection

Jockstraps are the ultimate choice for active water sports, providing optimal support and protection. When considering jockstraps for swimming or engaging in water-based activities, they offer numerous advantages. First and foremost, jockstraps provide ample support for the sensitive areas, ensuring comfort and preventing discomfort during movement.

Additionally, they offer protection by minimizing the risk of injury and reducing potential strain on muscles. Jockstraps also help maintain proper alignment and stability, especially when performing high-intensity movements in the water. Furthermore, their design allows for excellent breathability, preventing excessive sweating and reducing the chances of irritation.

Overall, wearing jockstraps under swim trunks is a wise choice for individuals seeking maximum support, protection, and comfort during active water sports.

5. Compression Shorts: Enhanced Performance

Compression shorts are a great choice to wear under swim trunks for enhanced swimming performance. These shorts provide several benefits that can improve your overall experience in the water. First, compression shorts offer muscle support, helping to reduce fatigue and increase endurance.

They also improve blood circulation, which promotes better oxygen flow to the muscles, resulting in improved performance. Additionally, compression shorts can reduce muscle vibration during swimming, enhancing power output and efficiency. They provide a snug and secure fit, preventing chafing and irritation.

Furthermore, compression shorts offer thermal regulation, keeping your body at a comfortable temperature in and out of the water. Overall, wearing compression shorts under swim trunks can greatly enhance your swimming performance and make your time in the water more enjoyable.

What to Wear under Swim Trunks? Discover the Best Options!


6. Swim Shorts With Built-In Liner: All-In-One Solution

Swim shorts with built-in liners provide the ultimate convenience and functionality when it comes to swimwear. These all-in-one solutions eliminate the need for additional undergarments, making it easier and more comfortable to enjoy your time in the water. The built-in liner offers support and coverage, ensuring a secure fit and preventing any wardrobe malfunctions.

Whether you’re lounging by the pool or engaging in water sports, swim shorts with built-in liners are designed to keep you comfortable and confident. They are available in a variety of styles and colors, so you can choose the perfect pair that suits your taste and preferences.

Discover the benefits of swim shorts with built-in liners and enjoy a hassle-free swimming experience.

7. Athletic Cup: Extra Protection For Extreme Activities

An athletic cup can provide extra protection for extreme activities when worn under swim trunks. It is essential to consider using an athletic cup under swim trunks in situations where there is a higher risk of impact or injury. The athletic cup adds a layer of safety and prevents potential harm during intense water sports or activities.

Wearing an athletic cup can help reduce the chances of accidents or discomfort, allowing individuals to fully enjoy their recreational activities with peace of mind. The protection and safety benefits provided by an athletic cup make it a valuable addition to swimming trunks for those engaging in extreme physical pursuits.

8. Hygiene Tips: Maintaining Cleanliness

Maintaining cleanliness is crucial when wearing swim trunks to prevent infections and promote hygiene. First, always ensure that swim trunks are clean and dry before wearing them. Secondly, avoid wearing underwear beneath your swim trunks as it can trap moisture and lead to bacterial growth.

Instead, opt for swim briefs or swim jammers for added support and comfort. Additionally, after each use, rinse your swim trunks thoroughly with fresh water to remove any chlorine or salt residue. It’s also essential to regularly wash your swim trunks with mild detergent to keep them clean and fresh.

Lastly, remember to follow proper personal hygiene practices, such as showering before and after swimming, to maintain cleanliness and prevent any potential infections. By following these guidelines, you can enjoy your swim trunks while prioritizing hygiene and cleanliness.


Frequently Asked Questions Of What To Wear Under Swim Trunks?

1. Do You Wear Anything Under Swim Trunks?

No, in general, you should not wear underwear with swim trunks. However, some circumstances may call for it.

2. Do Guys Wear Anything Under Swim Trunks?

No, guys generally do not wear anything under swim trunks, but some may wear underwear for added comfort.

3. How Do You Wear Swim Trunks Without A Liner?

If your swim trunks don’t have a liner, you can either wear swim briefs for added comfort or skip the underwear altogether.



When it comes to what to wear under swim trunks, the general consensus is that you should not wear underwear. While there may be certain circumstances where wearing underwear with swim trunks is necessary, such as extreme water sports or frisky board shorts, in 99% of cases it’s best to skip the extra layer.

Swim trunks and board shorts are designed to be worn without anything underneath, providing the comfort and freedom of movement you need in the water. However, if you prefer the added support or coverage, you can opt for swim briefs or compression shorts specifically designed for water activities.

These will keep you comfortable and secure without compromising your style. Ultimately, the choice is up to you and what makes you feel most comfortable.