New Tilos Men's 6oz Anti-UV Long Sleeve Rash Guard (Large) for Scuba Diving, Snorkeling, Swimming & Surfing - Grey/White For use as a thermal layer and/or UV and rash protection Lightweight and durable Highest quality 6oz UV-rated nylon and spandex for ultimate sun protection and flexibility Quick drying to prevent evaporative heat loss 4-way stretch UV FLEX