O\'Neill Premium Skins Men\'s UV Protection Top The O\'Neill Premium Skins UV Sun Shirt is perfect to b worn under a wetsuit to prevent rashes or as a top that can be worn in the water on it\'s own to protect your skin from getting burnt. The fir is called slim which is designed to be tight against the skin and not like a tee shirt loose fit. The reason for this is so that in the water it does not move around and under a wetsuit you don\'t get bunching. Premium Skins 50+ U.P.F. is the pinnacle in quality, wearable sun protection. Ergonomic seam placement, 4-way stretch and quick-dry properties provide exceptionally soft feel and comfort KEY FEATURES - 50+ U.P.F. Maximum Protection - Strategic Seamless Paddle - 4-Way Stretch - Quick-Dry - Rash Protection - Boardshort Connector - Back Pocket and Cintch Cord  CONSTRUCTION - Premium Skins 6oz Composite Fabric