What to Wear Under Swim Trunks: The Ultimate Guide

When it comes to swimwear, one of the most debated questions is about what to wear under swim trunks. While some prefer the freedom of going commando, others want the support and comfort that underwear can provide. In this comprehensive guide, we will explore the various options available, the pros and cons of each, and ultimately help you decide what is best for you.

Comparison Table: Types of Underwear for Swim Trunks

Type of Underwear	Comfort Level	Support Level	Drying Speed	Best For
Nothing (Commando)	High	Low	Very Fast	Minimalists, free movement seekers
Swim Briefs	Medium	High	Fast	Competitive swimmers, performance
Compression Shorts	High	High	Medium	Athletes, those prone to chafing
Boxer Briefs	Medium	Medium	Slow	Casual beachgoers, comfort seekers
Regular Underwear	Low	Low	Slow	Rarely recommended due to discomfort

Understanding Swim Trunks and Their Design

Swim trunks have evolved significantly over the years. Modern designs often feature built-in mesh linings that provide support and reduce friction. This means that for many, wearing additional underwear becomes unnecessary. However, personal preference plays a key role in deciding whether to go without or add another layer.

The Purpose of Mesh Linings

Many swim trunks come with mesh linings that are designed to be comfortable and supportive. According to sources like openwaterhq.com, these linings help keep everything in place while you swim or engage in other water activities. If you dislike mesh linings, opting for board shorts without them is a viable option, as highlighted by wetried.it.

The Case for Going Commando

Going without additional underwear, or “going commando,” is a popular choice for many. It allows for maximum freedom of movement and eliminates the risk of chafing from extra layers. However, this approach may not be suitable for everyone. Some individuals may experience discomfort or feel insecure without the added support.

Types of Underwear to Consider

Choosing the right type of underwear to wear under your swim trunks can make a significant difference in comfort and performance. Below are several popular options:

Swim Briefs

Swim briefs are specifically designed for water activities. They provide excellent support and are made from quick-drying materials, making them a favorite among competitive swimmers. According to alltriathlon.com, swim briefs can help reduce drag and improve performance in the water.

Compression Shorts

Compression shorts are another excellent option, especially for athletes. They offer support and help prevent chafing, making them ideal for longer water sessions. As noted by dryfins.com, these shorts can also provide a layer of protection against irritation.

Boxer Briefs

Boxer briefs are a popular everyday option for many men. They offer more coverage than traditional briefs but may not dry as quickly. While they can be comfortable, wearing them under swim trunks might lead to discomfort due to their tendency to retain moisture, as highlighted by innerweartalk.com.

Regular Underwear

While some may consider wearing regular underwear under swim trunks, it is generally not recommended. Regular underwear, particularly cotton briefs, do not dry quickly and can lead to chafing and discomfort. As noted by biguglymonster.com, these can also create visible panty lines (VPLs) and should be avoided if possible.

Pros and Cons of Each Option

Understanding the benefits and drawbacks of each option can help you make an informed decision.

Going Commando

• Pros: Freedom of movement, no extra layers, quick drying.
• Cons: Lack of support, potential chafing, possible discomfort.

Swim Briefs

• Pros: Excellent support, quick-drying, reduces drag.
• Cons: May not be comfortable for everyone, less coverage.

Compression Shorts

• Pros: Reduces chafing, provides support, quick-drying.
• Cons: May feel too tight for some, requires careful sizing.

Boxer Briefs

• Pros: Comfortable, more coverage.
• Cons: Slower drying time, can cause chafing in water.

Regular Underwear

• Pros: Readily available, familiar.
• Cons: Not designed for swimming, retains moisture, uncomfortable.

Technical Features Comparison Table

Feature	Swim Briefs	Compression Shorts	Boxer Briefs	Regular Underwear
Quick-Drying	Yes	Yes	No	No
Support Level	High	High	Medium	Low
Moisture-Wicking	Yes	Yes	No	No
Chafing Protection	Moderate	High	Low	Low
Best Usage	Swimming	All sports	Casual use	Rarely recommended

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Conclusion

Choosing what to wear under your swim trunks is a personal decision that depends on your comfort, activity level, and preference. With options ranging from going commando to using specialized swimwear, understanding the pros and cons of each can help you make the best choice for your needs. Ultimately, the right selection will enhance your experience at the beach or pool.

FAQ

What is the best underwear to wear under swim trunks?
The best underwear to wear under swim trunks includes swim briefs or compression shorts, as they provide support and dry quickly. Regular underwear is generally discouraged due to its slow drying time and potential for chafing.

Can I wear nothing under my swim trunks?
Yes, many people choose to go commando under their swim trunks for maximum freedom of movement. However, this option may not provide the support some individuals prefer.

What are the advantages of swim briefs?
Swim briefs offer excellent support, are made from quick-drying materials, and can help reduce drag while swimming, making them a popular choice for competitive swimmers.

Do compression shorts prevent chafing?
Yes, compression shorts are designed to fit snugly against the skin, which helps reduce friction and chafing during water activities.

Is it okay to wear regular underwear under swim trunks?
While it is possible to wear regular underwear under swim trunks, it is generally not recommended as they do not dry quickly and can lead to discomfort and chafing.

How should swim trunks fit?
Swim trunks should fit snugly but comfortably around the waist and hips. They should not be too tight, as this can cause discomfort, but they should also not be loose enough to cause movement issues while swimming.

Are there swim trunks with built-in support?
Yes, many modern swim trunks come with built-in mesh linings that provide support and comfort, reducing the need for additional underwear.

What should I avoid wearing under swim trunks?
Avoid wearing regular cotton underwear under swim trunks, as they can retain moisture, cause chafing, and create visible panty lines.

Can wearing the wrong underwear affect my swimming?
Yes, wearing inappropriate underwear can lead to discomfort, chafing, and distraction while swimming, which can impact performance and enjoyment.

What is the most comfortable option for swim trunks?
The most comfortable option varies by individual preference, but many find that swim briefs or compression shorts offer a good balance of support and comfort for water activities.