Thermoprene is crafted from a high quality neoprene and low pill fabric. It has 75% more stretch than standard neoprene. Thermoprene is noticeably easy to don. The Henderson Thermoprene 1.5mm Sports Cap is the perfect accessory for multiple water sports in temperate to warm water when head protection is needed for thermal and sun protection. Sports Cap is made from premium Thermoprene nylon 2 material with an anatomical fit and flat lock stitched seams for added comfort. Cap comes equipped with an adjustable hook and loop chin strap with D-ring. Cap is available in multiple sizes and is black in color.