The CRESSI Okinawa 2-Window Mask gives a Wide Field of View. The Okinawa Mask has 2 Tempered Glass Lenses and is a Low Volume Design. The Mask has a Silicone Double Feathered Edge Skirt that is Soft-and-Comfortable. Its Inverted Tear Drop Lens visibility, together with extreme comfort, efficient adjusting Low Profile Swivel Buckle System for the Silicone Strap makes this model a great choice for all diving activities, from snorkeling to deep free diving, to scuba diving. The Mask Strap is a Wide Split Strap Design for a better Fit and added Comfort. Mask has an Easy-to-Reach One-Hand Nose Pocket for Ear Equalization which can be utilized even when wearing thick gloves. The Mask Skirt is designed for an Asian Fit. The Okinawa Mask is available with a Black Skirt and is covered by a 12 month limited warranty.