The M-24 Powerview features a unique 2-Window Low Volume Design that offers Exceptional Visibility and Comfort. The Reduced Frame Structure utilizes Composite Material resulting in a Lightweight Mask with Enhanced Grip and Shock Protection. The Powerview"s Reversed Tear Drop Shaped Tempered Glass Lenses Expand the Downward Visual Range by 30% over Conventional Dual Lens Masks. Like all TUSA masks, it incorporates a wide range of features to Enhance Comfort and Provide Clarity of Vision. 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, you won"t have Ring-Around-the-Eyeballs" like with other masks. TUSA"s Patented 3-D Wide Split Strap is a true Three-Dimensional Design that Snugly Fits against the Head"s Natural Curvature. The 3-D Strap offers Unprecedented Comfort and Fit unlike standard flat mask straps. The 5 Angle Strap Adjustor allows for a 5-Position Micro-Adjustment on both the left and right sides of the mask. This enables Vertical (up/down) and Horizontal (left/right) Pressure on the Face to be Delicately Adjusted for the Optimum Fit. The Powerview also accepts Corrective Lenses. The Mask has a Soft Double Feathered Edge Silicone Rubber Skirt with an Easy-to-Reach One-Hand Nose Pocket for Ear Equal