TheSherwoodVantage is a modern traditional design that is versatile and utilitarian. This mask fits great on most divers and has the ability to have the standard lenses replaced with prescription lenses -1.5 to -8.0. Classic dual lens design, QD buckles, and tempered glass lenses. The silicone skirt has a double edge for smooth and effective sealing to the cheeks and forehead. The easily adjusted quick disconnect buckle system allows simple adjustments to the mask strap with no slipping.Mask has a wide split strap design that works in concert with the double edge of the skirt for a perfect seal on the face. The Vantage Mask has a large easy to reach one hand nose pocket for ear equalization. Optional prescription lenses available in negative diopters (see SKU: SWDMCL). Mask is available in multiple colors and comes with a protective mask case.