Mares Mens Trilastic Long Sleeved Rashguard Ideal as undersuit or by itself for superior UV protection FEATURES UV protection 50+ Cool lightweight material Flat seam construction for comfort Characterized by the Mares Trilastic look, the rash guard is built with a material that provides UV protection of 50+. The seams, sewn with flatlock stitching, won t leave marks on your skin. Perfect to wear underneath your suit and ideal for all kinds of watersports.