Ideal as undersuit or by itself for superior UV protection. Features: UV protection 50+, Cool lightweight material and 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, wont leave marks on your skin. Perfect to wear underneath your suit and ideal for all kinds of watersports.