The O'Neill Skins Short Sleeve Rash T-Shirt has all the great UV tech from the Skins Rashguard series, but in a relaxed, t-shirt fit that you can wear on dry land or in the water. The O'Neill Skins Rash Tee is made from 6oz of Nylon/Spandex for chafe protection and durability, and they won't ride up thanks to the boardshort interface. 4-Way stretch. Ergonomic seam placement.