3mm diving helmet (L/XL - head circumference 59-62cm), neoprene helmet with vents to eliminate trapped air, suitable for snorkeling and water sports, for women and men [High Quality] - This diving cap is made of 3mm neoprene material and is very elastic and flexible. The snorkeling cap is flexible, lightweight, convenient and quick-drying. [Durable and Breathable] - This surfing cap has fine stitching and blind stitching which is more durable than flat stitching. It protects your head from sea lice and coral without feeling tight and stuffy. [UV Resistance] - The cap is made of heat and UV resistant scuba fabric, which protects your head and shoulders from harmful UV rays. [Wide scope of application] - These beanies are suitable for scuba diving, snorkeling, fishing, surfing, swimming winter swimming, underwater projects and other water sports.