Atomic Venom Ultra Clear Ultra Wide Panoramic View Scuba Diving Mask, Blue New UltraClear Schott Superwite glass lens with exceptional optical clarity. Patented SubFrame design with hydrodynamic styling and no external frame. Double-layer, dual-color silicone skirt keeps the mask comfortably secure. One-window / low volume design for unobstructed forward vision and wide viewing angles. Simple squeeze-to-adjust mask strap