Fuse Lenses for Smith Optics Rosewood Plastic frame Plastic lens Non-polarized lenses Lens width: 61 millimeters Fuse Gradient Brown Tinted Lenses. Dark Brown at the top and fades to clear. A popular choice for high-end or fashion frames. Neutral brown view. Brown tint offers increased color contrast. Non-polarized lenses Completely block harmful UV rays, providing 100% UV protection Fuse Force scratch resistant hard coating Lens Category 2, Ideal for General Use Custom Made to easily interchange with your current sunglasses.