Cressi’s Duke full face mask is designed with safety in mind. With a 30% larger viewing area, snorkelers can see all the underwater world has to offer without feeling claustrophobic. The valve’s design gives the user effortless and natural breathing, with a wide breathing area around the nose and mouth. Water draining valves safely remove any water that may enter the mask. This mask is designed for surface use only and should not be used at depth. The face skirt is made of soft hypoallergenic silicone that gives comfort and a perfect seal. The two x-cross straps are easy to adapt for a perfect fit for your head. Frame and lens are made of polycarbonate material. The Duke is entirely designed and developed in Italy by Cressi and made in China. Cressi has been an Italian brand pioneer in scuba diving, snorkeling and swimming equipment since 1946.