The surf cap features our Magma Air-Insulation thermal linning the warmest, lightest and fastest drying fabric available in the Gul line up.  4-Panel Construction for a comfortable fit made with 3mm RS-Flex 2 Neoprene. The cap is Glued and blind stitched G-tape reinforced seams for strength and durability. The cap features a H10 Peak that shields the face from water run off and the sun, with a Powertex 4 Neck strap with spandex binding to keep your cap secure and to provide additional comfort.