Barska Convertible Sunglasses / Shooting Glasses w/ 3 Interchangeable Lenses easily convert from standard sunglasses to a clip-on sunglass. Just detach the side arms and attaching the polarized sunglasses to the brim of any cap using the brim clips. The Barska Shooting Glasses are ideal for Hunting, Fishing, Golf, Cycling Skiing, Inline Skating, Climbing, Running, and any outdoor sporting activity. The Barska Polarized Sunglasses are made with high quality materials ensuring durability and optimal safety. These shooting glasses from Barska offer 99.9% UV Protection, and feature polarized lenses that greatly reduces glare. Light reflected from surface like a flat road or smooth water is generally horizontally polarized. This horizontally polarized light is blocked by the vertically oriented polarizers in the lenses of the Barska Convertible Shooting Glasses, resulting in a reduction in annoying and sometimes dangerous glare.