This is the Tusa Ino Mask for Small Faces for Scuba or Snorkel Features: One-Window mask designed for divers with smaller face shapes. Wide field of view is achieved by placing the lens closer to the face. A low volume mask. Varied silicone thickness with a proprietary low-friction skirt surface of the fitting line. Similar fitting technology as the popular INTEGA and ZENSEE. 3D SYNC Technology Round Edge Skirt Swift Buckle 3D 3D Mask Strap Product Description: The Ino Mask is ideal for smaller faces with its One-Window design, a wide field of view, and low volume. It&';s comfortable for divers of any level and style. TUSA has developed a unique Fitting Ring that has been built into the Mask Skirt. This technology enables the Mask Skirt to mold to all face shapes providing the ideal fit, seal and underwater experience. TUSA has designed the perfect buckle and mask strap. The NEW low profile buckle is slim and light weight. The easy adjustment buckle and strap is silent and effortless when making adjustments. TUSA&';s patented 3D Strap is a true three-dimensional design that snugly fits against the head&';s natural curvature. The 3D strap offers unprecedented comfort and fit, unlike standard flat mask straps. TUSA&';s Round Edge Skirt features a proprietary round edge cross-sectionally shaped skirt. This rounded edge results in a soft fit that suppresses pressure and reduces creasing left on the face. The "planar fit, instead of linear fit" silicone skirt maintains great fit and unprecedented comfort.