This is the Sherwood Scope Single Lens Frameless Mask for Scuba Diving and Snorkel Features: One of a kind elastic mask strap Unique frameless mask Single adjustment for proper fitting Tempered glass lens Single lens provides wide field of vision A Frameless Mask with One of a Kind Styling! Using technology and styling from outside the dive industry the Sherwood Scope Mask looks more like Ski Goggles than a diving mask. The Scope provides unmatched comfort. Unlike other silicone based silicone straps, the Scope mask&';s unique design provide ease of donning on and off. Women with long hair will certainly appreciate this new design.