PREMIUM INSULATING NEOPRENE Material Keeps Core Body Temperature Stable in Colder Waters (68° - 62°). TOP FORM AND FUNCTION. Provides Buoyancy for Maximum Performance Without Sacrificing Flexibility or Movement. Sleek, Flatlock Stitching & Design Maximizes Comfort During Wear, and Makes It Easy to Slip On and Off. Double Layer Neoprene is UV-Resistant.