GBRS Group X RKA(TM) Barton 2.0 Protective Sunglasses This versatile, modern square frame has classic aesthetics that can go anywhere, and it&';s packed with technology that makes it equally suited for a day on the range, long trail run, or a day on the water. These protective glasses features advanced GEKO(TM) grips for a secure, non-slip fit, and custom-fabricated spring hinges that provide a bespoke fit for each person&';s face. Ultra lightweight, durable and comfortable No-Slip GEKO(TM) Pads enhance fit and retention, relieve pressure points, and get sticker when wet Premium lenses and coatings that are scratch resistant Fog resistant, sweat resistant and made to move Premium spring hinges provide stable retention and will never wear out or require tightening Includes: case, microfiber bag Cleaning: Hand wash with mild soap and water Dark Carbon (Polarized) Lens: 12% light transmission, ideal in bright conditions, and polarization blocks glare on the water and the road. Clear Lens: 91% light transmission, ideal in low light or nighttime conditions. COLORS: Matte Black Frame - Dark Carbon (Polarized) Lens Matte Black Frame - Clear Lens DIMENSIONS: 56 mm lens width 43.5 mm lens height 18 mm distance between lenses 134 mm temple length