Smith optics I / ox interchangeable snow goggles. *. Extra large frame designed to fit larger faces provides expansive field of view. * Spherical Lens curved spherical lens architecture that maintains spatial distortion and provides protection from sun glare. *. Interchangeable lens mechanism designed with large pivoting outriggers on the sides of the frame to lock the lens securely while allowing swaps for changing light conditions. *. Larger foam features thick high density find something across top and sides for wind insulation and moisture management.