UA Ames Rash Guard Men&rsquo;s Surf Short Sleeve T-Shirt Compression: Ultra-tight, second skin fit. Salt & chlorine-resistant materials help prevent fading & wear in the water HeatGear fabric, with all the benefits of UA Compression, comfortable enough to be worn all day. Moisture Transport System wicks sweat and dries fast. UPF 30+ protects your skin from the sun's harmful rays 4-way stretch fabrication allows greater mobility in any direction Anti-odor technology prevents the growth of odor causing microbes. Nylon/Elastane