★ULTRA PHOTOCHROMIC LENS: This biking sunglasses made of PC transparent lens, it will be very clear in cloudy and turn darken based on the intensity of sunlight and ultraviolet light to protect your eyes from harm(Tips:it may not change obviously under weak UV light conditions). The sport sunglasses suit for both Men and Women

★SUPER LIGHTWEIGHT: Our photochromic sunglasses weight only 30 grams, like feather weight without any burden on you. What’s more, it made of durable composite frame, scratch resistant and unbreakable

★SOFT AND ADJUSTABLE RUBBER NOSE: Let Your Nose Feel Comfortalbe While Wearing rock bros Sports sunglasses for Cycling Running Fishing Golf,It can also be adjusted according to the shape of your nose

★USAGE OCCASIONS: ROCK BROS Photochromic sunglasses prefect for many outdoor sports, it will protect your eyes and stop the harmful effects of sunlight while you are biking, driving, running, fishing or other outdoor activities. Keep your eyes safety always by your side

★LIFETIME BREAKAGE WARRANTY - Whenever any problem happens, contact the seller of ROCK BROS without hesitation to solve the problem until satisfaction. ROCK BROS provides lifetime after sale service for all ROCK BROS products