The Atomic Aquatics Venom ARC Mask combines the unbeatable features of the original Venom mask with Atomic’s premium ARC-Lens Technology. The Venom dive mask uses the highest purity grade UltraClear glass available, meaning you get incredible clarity and high light transmission not available in other masks. Features: 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 Lifetime warranty against frame breakage New UltraClear Schott Superwite® glass lens with exceptional optical clarity Anti-Reflective Coatings is a multi-layer metal oxide coating process applied to both sides of the Ultra-Clear lens Allows more light to enter the mask by reducing light reflections off the inside and outside surface of the lens Metal oxide coating is only a few microns thick A must have for photograghers, avid night divers, or those diving in limited visability conditions