Harley riders have worn The Original KD's since the 1950's making them the #1 selling biker sunglass in the world. KD's are lightweight, have long slim arms for better peripheral vision, and fit comfortably under a helmet. The Original KD’s have a die-hard following that help to make them wildly popular with the motorcycle cycle crowd and beyond. The ultra-strong polycarbonate frame makes it one of the most durable sunglasses on the market. All lenses meet ANSI Z80.3 general purpose UV requirements.