New Tilos Men's 6oz Anti-UV Short Sleeve Rash Guard - Black/Red (Size 2X-Large) 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 Flat-Stitched throughout entire suit