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What Is a Rash Guard?

Man wearing Le Club Original's Abaco Rash Guard and swim trunks

Elevating Your Sun Protection Strategy

Whether you are planning a week of surfing in Costa Rica or simply lounging by a South Florida pool, your warm-weather wardrobe needs to do more than just look good—it needs to protect you. While packing a high-quality pair of tailored swim trunks or a premium bikini is step one, protecting your upper body from harsh UV rays is just as critical.

If you spend significant time in the water or partake in active beach days, a standard cotton t-shirt won't cut it. You need a garment specifically engineered for the ocean. Enter the rash guard. Here is everything you need to know about this coastal performance essential and why it deserves a permanent spot in your vacation bag.

1. What Exactly Is a Rash Guard?

Originally designed for surfers to prevent "board rash" (the chafing caused by rubbing against a waxed surfboard), a rash guard is a specialized athletic shirt crafted from synthetic, water-friendly materials like spandex, nylon, or polyester.

Today, you don't need to be a professional surfer to wear one. At Le Club Original, we engineer our rash guards as premium coastal activewear. They are incredibly lightweight, feature 4-way stretch for maximum mobility, and most importantly, act as an impenetrable shield against the sun.

2. The UPF 50 Sun Protection Advantage

The primary reason modern beachgoers wear a rash guard is for superior sun protection. When you are in and out of the water, sunscreen easily washes off, leaving your shoulders and back exposed to severe sunburns.

Unlike a standard cotton t-shirt, which allows UV rays to penetrate the fabric, Le Club Original rash guards boast a UPF 50+ rating. This means the tightly woven fabric blocks 98% of the sun's harmful rays. Slipping a rash guard over your sustainable swim trunks provides all-day, waterproof protection that you never have to reapply.

3. Rash Guard vs. Linen Shirt: Which Do You Need?

Many travelers wonder if they should pack a rash guard or a beach shirt. The truth is, a complete resort wardrobe requires both, as they serve entirely different purposes.

A rash guard is built for performance. You wear it in the water, while paddling, or during an active morning on the sand. It is designed to get wet and dry quickly.

Conversely, the Peter Linen Shirt is built for leisure. You wear it after you have dried off. Its naturally loose weave and elegant drape make it the perfect garment for lounging at the beach club or transitioning to a seaside dinner.

4. The Women's Crop Rash Guard

With the launch of the Le Club Original women's collection, UPF protection gets a chic, modern upgrade. We have taken the same premium, sun-blocking fabrics used in our men's line and engineered them into flattering women's silhouettes.

The Le Club Original women's crop rash guard (featuring vibrant tropical prints like the La Plage Summer Crop) is designed to seamlessly pair with your favorite high-waisted bikini bottoms. It provides all the essential UPF 50+ sun protection and chafing prevention you need for a day of paddleboarding, but with an elegant, tailored fit designed for the style-conscious traveler.

Frequently Asked Questions

Are you supposed to swim in a rash guard? Yes. Rash guards are specifically designed to be worn in the water. Unlike standard cotton shirts that become heavy and clingy when wet, rash guards are made from lightweight, synthetic blends that dry quickly and maintain their shape while swimming or surfing.

Do you wear a shirt or swimsuit under a rash guard? For men, you do not need to wear a shirt under a rash guard. They are designed to be worn directly against the skin. For women, crop rash guards are typically worn directly over a bikini top or swimsuit for added chest and shoulder protection.

Does a rash guard keep you cool? Yes. Even though they provide extensive coverage, high-quality rash guards are highly breathable and feature moisture-wicking properties. They pull sweat away from the body and protect your skin from direct sunlight, which actually keeps you cooler than exposing bare skin to the sun.