O\'Neill Squid Lid 3mm Thermal Wetsuit Cap | Black This cap will keep your head area extremally warm and protected during those long and cold surf sessions! Its wind resistant and a visor is provided to block out the sun and keep water out of your eyes! It has been manufactured with 100% Ultraflex SL Neoprene making it super stretchy and easy to put on and takeoff! This cap is the way forward and we highly recommend purchasing it! The glued and blind stitched seams mean that no water will get in and the thermal heat will stay trapped inside! Features 100% Ultraflex SL Neoprene Wind Resistant Smooth Skin (SL) Exterior Glued and Blind stitched Seams Firewall Interior UV Protection Visor Blocks Sun and Channels Water from Eyes