Tell the sun to get lost! No matter where the wind blows you, The Skysurfer has you covered. These aerodynamic Pit Vipers feature rubberized touchpoints to keep them planted at any altitude, while the anti-scratch lens ensures an extreme view in any condition. Lens: Photochromic Polycarbonate Look Thru Color: Grey Light Transmission: 18-69%, CAT 2-1 100% UVA + UVB Protection No-slip-grip rubberized touch points DO: Clean your Pit Viper Lenses with the Limpcloth(TM) (included with every pair of Pit Vipers) and hot mouth breath, or Snake Oil Lens Cleaner (sold separately). DO NOT: Clean your Pit Viper lenses with bleach, dish soap, household chemical cleaning products, salt water, sandpaper, sweat, or other bodily fluids, mysterious or other. What&';s in the Box 1 Pair of Pit Vipers 1 Tie Downs(TM) Retainer Strap 1 Limpcloth(TM)