Oceanic Pioneer Mask, Top Rated Scuba Diving Dive Mask Ultra-soft silicone skirt molded directly to a rigid inner frame for extremely low internal volume Full metal aluminum frame provides added strength and durability Low volume, dual lens design with unsurpassed viewing angle Skirt Tube Mounted Buckles reduce pressure on face | Exclusive one-touch buckle adjustment 3D strap design that snugly fits against the head's natural curvature for unprecedented grip & comfo