This is an Oceanic Shadow & Mini Shadow, very low volume, 1-lens mask for you to enjoy on your next dive. Features of this great mask include: Frameless design Extremely low volume design for better visablility and easier clearing No mask frame means the Shadow Series offers an incredible field of vision and packs flat Soft nose for easy equalizing 1-window style for a large view Sleek 100% liquid silicone skirt attached directly to the tempered glass lens Swiveling, easy adjusting buckles Comfortable mask strap cover Tempered glass lenses Ideal for hunters and photographers This 1-Window Scuba & Snorkeling Mask is a GREAT low volume mask. Great for scuba diving and snorkeling.