What to Wear Under Rash Guard

A rash guard is a type of athletic shirt made of Lycra, spandex, or a similar synthetic fiber. Rash guards can be worn as a standalone shirt or as an ingredient in a layered clothing system to prevent rashes and sunburn. They are most commonly worn by swimmers, surfers, and other athletes who participate in activities where there is a possibility of repeated contact with abrasive surfaces or sunlight.

What is a Rash Guard?

A rash guard is a type of athletic shirt made of spandex and polyester or nylon. They are very popular among swimmers and surfers because they protect the skin from rashes caused by sun exposure, wax from surfboards, and stings from jellyfish.

Rash guards can be worn by themselves or under a wetsuit. They come in long sleeve and short sleeve varieties, as well as different colors and styles. Many rash guards have UPF (Ultraviolet Protection Factor) ratings to protect against sunburn.

The Different Types of Rash Guards

When choosing a rash guard, it is important to consider the type of activity you will be doing. Rash guards come in a variety of sleeve lengths, necklines, and materials.

Short Sleeve Rash Guards

Short sleeve rash guards are ideal for surfing, SUP, kayaking, or any other water sport where you need a little extra sun protection. They also work well for layering under a wetsuit.

Long Sleeve Rash Guards

Long sleeve rash guards provide the most sun protection and are great for surfing, SUP, kayaking, snorkeling, or any other water sport where you need to stay safe from the sun’s harmful rays.

Collared Rash Guards

Collared rash guards have a higher neckline that provides more sun protection for the neck and chest area. They are ideal for watersports where you need to stay safe from the sun’s harmful rays.

Zip Up Rash Guards

Zip up rash guards are great for layering under a wetsuit or for provide easy on and off. They also offer more sun protection than a standard rash guard.

Rash Guard Materials

Rash guards are usually made from Polyester, Nylon, Spandex, or Lycra. These materials are lightweight, quick drying, and offer UPF (Ultraviolet Protection Factor) ratings of 50+ to keep you safe from the sun’s harmful rays.

How to Choose the Right Rash Guard for You

It can be difficult to know what to wear under your rash guard. Rash guards are designed to provide a layer of protection between your skin and the elements, but they can also be used as a fashion statement. With so many options on the market, it can be hard to know which one is right for you. Here are a few things to consider when choosing a rash guard:

  • Fabric: Rash guards are typically made from either Lycra or polyester. Lycra is more comfortable and durable, but it also tends to be more expensive. Polyester is more affordable, but it is not as breathable as Lycra and can cause chafing.
  • Fit: Rash guards should fit snugly against your skin. They should not be so tight that they restrict movement, but they should not be so loose that they allow sun exposure or water entry.
  • Style: Rash guards come in a variety of different styles. Some are designed for specific activities, such as surfing or paddling, while others are meant for everyday use. Choose a style that suits your needs.

The Benefits of Wearing a Rash Guard

A rash guard is a type of athletic shirt made of spandex and polyester or nylon. It is usually worn as a swimsuit top or under a wetsuit to prevent chafing and rashes from saltwater, sand, and sun. Rash guards may also be worn for other activities where skin protection is desired, such as surfing, scuba diving, kayaking, stand up paddleboarding, windsurfing, bodybuilding, and mixed martial arts. They are also sometimes worn by lifeguards.

How to Wear a Rash Guard

Rash guards are a type of athletic shirt worn as outerwear or underwear. They are designed to protect the wearer from chafing, sunburn, and skin irritation. They are often worn by surfers, swimmers, and other athletes who spend a lot of time in the sun.

There are a few different ways to wear a rash guard. The most popular way is to wear it over swim trunks or a bathing suit. This offers the most protection from the sun and from chafing. Another option is to wear it under a wetsuit. This can help prevent chafing between the wetsuit and your skin. Finally, you can wear a rash guard on its own as a type of athletic shirt.

No matter how you choose to wear your rash guard, make sure it fits snugly against your skin. This will help ensure that it provides the best possible protection while you’re enjoying your favorite outdoor activities.

Rash Guard Outfit Ideas

Whether you’re hitting the waves or just want to rock a athleisure look, pairing a rash guard with the right pieces can create a stylish and functional outfit. Here are some of our favorite ways to style a rash guard.

With High-Waisted Shorts

Whether you’re going for a surfing or yoga look, high-waisted shorts are a great way to pair with your rash guard. Not only do they look great, but they’ll also keep you feeling comfortable and secure while you’re active.

With a Skirt

If you want to show off your feminine side, try pairing your rash guard with a flowing skirt. This is a great look for stand-up paddle boarding or simply strolling along the beach. Just make sure that your skirt is long enough to provide adequate coverage.

With Cropped Leggings

For a sleek and sporty look, try pairing your rash guard with cropped leggings. This outfit is perfect for running, biking, or any other activity where you want maximum mobility. And, since cropped leggings often have flattering seam lines, they’ll help give your figure an extra boost.


In conclusion, there are a few different options for what to wear under your rash guard. If you are swimming in cold water, you may want to consider a wetsuit or drysuit. If you are swimming in warm water, you can get by with a swimsuit or bikini. And if you are doing a lot of physical activity, you may want to consider a sports bra. Whichever option you choose, make sure that you are comfortable and that your rash guard fits well.

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