This is the Akona 8 oz Short Sleeve Rash Guard for Diving, Surfing, Snorkeling, etc. Features: Designed to reduce UV exposure 8 oz. 4-Way flex nylon / Spandex composite Breathable, flatlock - stitched seams 50+ U.V. Protection blocks 97.5% of harmful rays Fast drying and odor resistant This is a fabulous price on a quality rash guard. Quality, versatility, and price, What more could you ask for?