These Von Zipper Sunglasses - Kickstand - are a new series, with these particular glasses are tortoise frames with bronze poly polarized lenses. Ride with 'em on your bike, while your skateboarding, bumping in your ride, wherever. They offer 100% UV protection, Base 8 impact resistant polycarbonate, spherical lenses, and to top that include a Nylon grilamid frame, and stainless steel optical hinges. These babies aren't going to bust anytime soon. Made tough by Von Zipper, available at EXIT real world.