This is the Bare Sport Frameless Scuba Diving Mask

Features:

• Low volume frameless mask with single lens
• Revolutionary push-button buckle allows for easy, quick strap adjustment
• Unique flexible buckle attachment swivels with facial movements and absorbs shock, preventing buckle breakage when mask is bumped
• Ultra clear tempered glass lenses
• Low volume double-flanged black silicone skirt

Sport Frameless is a low-volume single lens design that incorporates a soft, supple double-flanged silicone skirt for an excellent face seal.