The Reactor Long Sleeve UV Rash Tee is a high quality lycra garment from O'Neill that is built to last. Offering UV Protection U.P.F 50+, and rash protection, O'Neill's rash vests are an essential for your wardrobe. 6oz Nylon/Poly/Spandex Loose Fit S.M.L.XL.XXL.3XL UV Protection U.P.F 50+