Product Features Neoprene is warm, durable nylon is elastic and comfortable to wear. Specifications Material: neoprene and nylon Color: black Dimension thickness: about 2.5 mm/0.1 inch thick Head circumference: about 58 cm/22.8 inchesWide Applications: multi-function swimming cap is suitable for most water sports,such as swimming,diving,snorkeling,canoeing,fishing,surfing, sailing,canoeing,etc.The swimming cap is not completely waterproof,and can be used with other diving equipment. Ideal Helper: easy to carry,keep your hair clean,don't worry about messy hair,save your time and energy,provide you with a flexible fit and comfortable diving experience,and add warmth and protection to your head. Protection: protect your head and face from the harmful rays of the sun, and also protect your head from sharp objects and marine plants in the water,such as coral reefs,jellyfish,etc. Functional binding Design: the chin binding allows you to freely adjust the tightness of the shoulder strap according to the head circumference,ensuring that the hook and loop at the chin are closed and comfortable,reducing the resistance in the water,and keeping you warm underwater. Comfortable and Durable: Made of elastic neoprene and nylon materials,it has excellent strength and durability,deformation resistance and elastic comfort.It fits your head and face curves comfortably and provides you with comfortable wearing experience.Date First Available: February 17, 2023. Best Sellers Rank: #409,539 in Sports & Outdoors. : B0BW3RRMMX. Size: ?One Size. Included Components: ?Nothing. Manufacturer: ?LOOEEL. Suggested Users: ?Unisex. Material: ?Nylon, Neoprene. Color: ?Black. Model Name: ?Neoprene Dive Cap Surf Cap. Warranty Description: ?1 year. Item Weight: ?0.2 Pounds. Package Weight: ?0.09 Kilograms. Item Package Dimensions L x W x H: ?9.53 x 6.54 x 1.22 inches.