C-Skins Swim Research Storm Chaser 2mm Beanie - Unisex\'s The C-Skins 2mm neoprene Storm Chaser Beanie is a great alternative to a knitted hat when you are in the water for added warmth and performance. With the aesthetics of a knitted hat but constructed using 2mm Free Flex Neoprene combining Thermotech Polypro Lining, the Storm Chaser Beanie helps ensure heat retention to help keep you warmer for longer. Perfect for all water sports and certainly an essential in the cold winter months! Features: 100% Free Flex neoprene – Combines flexibility with durability ThermoTech Poly Pro lined – A flexible quick dry thermal lining for added warmth and performance True 2mm Thickness Neoprene – A warmer thicker product that doesn’t mislead our customers Size Chart Adult Beanie Size Circumference XS 51cm  /  20.07in S 53cm  /  20.86in M 56cm  /  22.04in L 58cm  /  22.83in XL 61cm  /  24.01in