The Hollis neoprene mask strap replaces the standard silicone strap with a webbing and buckle version that is fixed to a branded neoprene head band. The Hollis mask strap helps to prevent hair damage. Ideal for all divers and snorkelers who lover their comfort and don't want damaged hair! With strong webbing straps and a semi-stretchy beoprene back, once you set this strap how you like it you never have to adjust it again.