This is the SeaSoft UltraDive Frameless Single Lens Super Mask with HGG Glass and Crystal ARC Lens Features: Top of the line frameless single lens SUPER Mask The HGG Glass is a special type of glass that has most of the impurities extracted from it CRYSTAL ARC coatings are ultra-thin metal oxide coatings similar those found on expensive riflescopes and camera lenses that allow more light to reach your eyes The amazing FITZ full liquid crystal silicone design, with a flarable skirt, delivers an unsurpassed comfortable, watertight fit for the medium to x-large face FREE SEASOFT Deluxe Soft Case FREE SEASOFT SEADIAL adjustable mask strap FREE 2 oz. bottle of SEASOFT&';s SEAVUE Anti-fog Spray SEASOFT&';s LIFETIME BREAKAGE WARRANTY, never worry about a broken mask again Most divers will think the SEASOFT ULTRA DIVE Mask was designed for them!