O'NEILL Men's Basic Skins Rash Guard Short Sleeve Black Large — UPF 50+ Performance Fit, Quick-Dry

O'Neill's Men's Basic Skins is a form-fitting short-sleeve rash guard that delivers UPF 50+ sun protection and a streamlined second-skin fit for water sports and beachwear.

Built from a comfortable 6oz polyester/spandex blend, this black short-sleeve rash guard balances lightweight stretch with durable construction so you can move freely in and out of the water. The design minimizes seams to reduce rubbing, sits close to the body in a performance fit, and uses sun-protective fabric engineered to block the majority of ultraviolet radiation. O'Neill positions this piece as an everyday watersports layer that complements boardsuits, swim trunks, or casual beachwear.

How does this rash guard protect my skin during long days outdoors?

The fabric is rated UPF 50+, which significantly limits UV penetration compared with unprotected skin. That rating means the material filters most of the sun's UV rays while you surf, paddle, or relax on the sand. Because it's a physical barrier, protection is consistent regardless of sunscreen slippage or water exposure.

• UPF 50+ fabric blocks a large portion of UV radiation.
• Short sleeves cover the shoulders and upper arms for extra protection.
• Close fit reduces gaps where sunlight can reach skin.

Will this rash guard prevent chafing when I’m in the water?

Yes — the Basic Skins reduces friction with its minimal seam placement and smooth knit surface. Seams are strategically placed to limit irritation under wetsuits or when worn alone, and the fabric's stretch conforms without bunching. That combination keeps skin comfortable during repetitive paddling and long surf sessions.

• Minimal seams decrease contact points that cause abrasion.
• Stretchy polyester/spandex blend moves with your body to avoid bunching.
• Performance fit stays snug under wetsuits or overboard layers.

How does the fit and fabric perform for active water sports?

The Basic Skins is cut in a performance, second-skin silhouette that fits snugly without restricting motion. The 6oz polyester/spandex fabric offers a balance of durability and stretch for swimming, surfing, and paddle sports. Lightweight construction dries quickly and layers easily under or over other gear.

• Performance fit designed for a close, athletic silhouette.
• Durable knit stands up to repeated use and chlorine exposure.
• Quick-drying fabric for fast turnover between sessions.

How should I care for this rash guard to keep it performing?

To preserve UPF performance and stretch, rinse the garment in fresh water after each use and wash on a gentle cycle with mild detergent. Avoid chlorine-heavy soak cycles and high-heat drying, which can degrade fibers and elasticity. Store flat or folded away from direct sunlight to prolong fabric life.

• Rinse in fresh water after salt or pool exposure.
• Machine wash gentle with cold water; avoid bleach.
• Air dry away from direct sun; avoid high-heat dryers.

Who is this for? Swimmers, surfers, paddle boarders, and anyone who spends hours outdoors and wants a reliable, low-profile protective layer will find value in the O'Neill Basic Skins short-sleeve rash guard. It suits athletes who prefer a tight, second-skin fit and need a quick-drying, abrasion-resistant top that layers easily under wetsuits or pairs with boardshorts for beach days. Choose the black large if you want a versatile, understated option that performs across a range of water and sun-exposed activities.