This is the Tusa Freedom HD Super Wide Field of View Scuba Snorkeling Mask Features: Incredibly wide field of view 180 degrees Rotational Buckle System Large frame with minimal internal volume Five-position strap angle adjuster for micro-adjustment Round-edge skirt 3-D mask strap Colors: Clear Silicone: Black, Cobalt Blue, Fishtail Blue, Flash Yellow Black Silicone: Black, Fishtail Blue, Flash Yellow, Metallic Dark Red Indigo Silicone: Indigo Freedom technology is a set of revolutionary features offering superior fit, comfort and increased performance in TUSA masks. Freedom model masks feature a dimpled skirt surface with varied silicone thicknesses and stability ridges in addition to a proprietary low-friction skirt surface on the fitting line. The TUSA HD Freedom Mask delivers maximum performance and comfort with a wide vision field. Buckles rotate sideways up to 180° for customized fitting to a variety of head sizes. The mask pairs innovative design with durable frame construction and high-quality materials. The skirt surface is made of silicone for maximum stability and minimum friction. It ensures soft fitting with reduced face creasing. Quickly adjustable buckle mechanism makes this mask more comfortable. It also has wide split 3-D strap for unprecedented comfort. The combination of adjustable buckle with strap allows diver to fit the mask up to 5 different positions. The nose pocket of TUSA HD Freedom Mask is easy to adjust even with thick gloves.