O'Neill Skins men's shortsis a 6 ounce 91% nylon 9% elastane spandex 4 way stretch with a performance fit, UPF 50+ protects you against harmful UV rays, protection lasts all day, unlike sunscreen, yet is breathable, fast drying, elastic waistband, strategic seamless paddle zones, flatlock stitching, rash protection, hand wash and hang to dry.