This is the Atomic Frameless 2 Low Volumes Scuba Diving Mask with Ultra-Clear Lens Features: Special UltraSoft silicone sealing flange Unmatched durability and resistance to breakage Optical quality, distortion-free UltraClear lenses Hydrodynamic styling with no exposed external frame Wide vision and low volume Great fit, NOW AVAILABLE IN 3 SIZES - MEDIUM, STANDARD AND LARGE FIT Squeeze-to-adjust buckles Clear or Black silicone rubber Extraordinary view. Unparalleled comfort. The latest evolution of the Frameless Mask uniquely combines two grades of silicone molded together to create the most comfortable mask in the water. Along with all the features that made the Atomic Frameless Mask popular with avid divers who want a wide, clear view, the Frameless 2 is even more comfortable over hours of dive time. A special sealing flange is co-molded with a softer grade of silicone for a soft touch