Bobster Piston Goggles Composite frame glass lens non-polarized BOBSTER GOGGLES: Whether riding a motorcycle, skiing, snowboarding, or free falling - one can expect superior functionality, comfort and durability from Bobster goggles. Specifically designed to conform to various shapes of faces, the goggle frame creates an effective seal that significantly reduces wind blasts and vibrations. The adjustable head strap provides maximum retention and security while the foam allows ultimate airflow to reduce lenses from fogging IMPACT RESISTANT UV PROTECTION: Our Polycarbonate lenses are up to 10 times more impact-resistant than plastic or glass lenses and they also provide 100% protection from the sun's harmful UV rays. They are also lightweight, adding to the comfort of your eyewear. The Piston is available in 4 different lens colors: Smoke, Clear, Amber, and Smoked Mirror OPEN CELL FOAM: This type of foam is lighter, softer and absorbs sweat. Open cell foam also provides a better seal or fit because it is softer and adapts to the contours of the face OPTICALLY CORRECT LENSES: Optically correct lenses prevent headaches from extended wear of eyewear. Non-optically correct lenses cause continuous refocusing due to distortion. This places a large amount of strain on the eyes and can eventually lead to headaches, nausea and dizziness. The Piston lenses are also Prescription Ready (Rx-able) SMALL / MEDIUM FRAME SIZE: Frame Width - 145mm, Lens Width - 55mm, Lens Height - 35mm. Comes with protective carry case