The Reef Tourer Adult X-Plore snorkeling mask is a low volume 2-window wide view mask with round edge silicone skirt, the EZ buckle system, and tempered glass lenses. Made with comfortable materials for endless hours of enjoyment in the pool or in the ocean. - Crystal-clear tempered glass lens is scratch resistant, has safety impact protection, provides superior clarity, color, and light transmission. - The low volume double seal mask skirt is made from the highest quality silicone, fitting many different faces maintaining water-tight seal. - The soft flexible elastic silicone strap paired with the simple pinch style adjusters can be easily tightened or loosened to fit many different head shapes/sizes. - 2-window masks offers a lower volume, making it easier to clear and equalize pressure. - 3-YEAR/36 MONTH WARRANTY - Comes in blister pack for easy merchandising display