The O'Neill Basic Skins range provides the best protection against harmful UV rays as well as great comfort and freedom of motion. It can be worn under a wetsuit or on it's own. Basic Skins offers UPF 50+ Ultraviolet protection, provides clean graphics, great style lines, ergonomic seam placement, 4-way stretch, and quick dry properties seal the deal. 6OZ Nylon U.P.F. 50+ UV protection Spandex 4-way stretch Boardshort connector Rash protection Quick dry Slim fit O'Neill Basic Skins S/S Crew UV50+ Rash Vest - Black