When it comes to athletic performance, these Polaroid sunglasses can't be beat. They’re composed of a half-rim frame with a full-coverage fit, made of polycarbonate. A secure grip is guaranteed by the rubberised nose pads and end tips, and when extra stability is needed, an elastic cord (purchased separately) can be attached via the openings. The lenses feature Ultrapolar technology for sharp, glare-free vision with boosted colors and truly defined contrast.