Cressi Sub 4 Window Penta Scuba Diving Snorkeling Mask This mask has four lenses and also introduces to this sector all the exceptional characteristics of the Matrix and the Lince. The Cressi patented system of raked lenses with an "inverted drop" shape offers incredible downward visibility, together with a headband that has side windows in a brand new material that is scratch resistant and much more transparent than glass or polycarbonate. The mask offers unprecedented lateral visibility and great luminosity for total vision with no compromises. Offers very low internal volume, a record weight of only 175 g, new skirt with exceptional sealing and comfort and indestructible buckles that are embedded in the headband to offer instant adjustment. FEATURES Type: four lens mask Versions: transparent silicone, black silicone Materials: liquid silicone, techno-polymers, elastomers Strap buckles: pressure, with instant adjustment Internal volume: very low Weight: 175 g Please Allow An Extra Five Shipping Days For Cressi Items As They Are Very Popular