De Soto GreenGoma Neoprene Swim Cap - 2015 Adds 5 Degrees of Warmth Made of Flexible Smooth Composite Skin Rubber so there's no need for Velcro openings. Thin profile chin strap maximizes comfort, while minimizing chafing & breathing obstruction. Designed to keep your head warm while in the water Color: Black, One-Size Fits All