This is the Tilos 1mm MetaLite Coated Adjustable Beanie for Scuba Diving, Surfing, and Water Sports. This beanie features: TILOS QUALITY Conserve Body Heat Without Giving up Freedom 1mm MetaLite Coated Neoprene Flat-Stitched Throughout Comfortable, Easy-Adjust Velcro Chin Strap This quality, well constructed adjustable beanie keeps you warm with comfort. Have fun and be warm during your water sports. Also great for camping.