ROCK BROS Photochromic Cycling Sunglasses for Men Cycling Glasses Clear Photochromic Safety Glasses Road Mountain Bike Bicycle Glasses UV400 Transition SunglassesPRODUCT DETAILS Brand: ROCK BROS Name: Photochromic Sunglasses Color: Black/Blue two colors Weight: Only 25g/pair Material: TR frame + PC lens KEY FEATURES 1.Photochromic lens cycling sunglasses automatically lightens or darkens in response to changing light conditions without needing to switch between glasses. 2.Large frame construction giving you more clear peripheral vision to avoid the frame blocking your view. 3. Ultralight cycling sunglasses reduce more pressure on your nose and temples and the tendency to forget you're wearing it. 4. Thicken PC lenses with UV400 protection coating, shatterproof and scratch-resistant effectively, protecting your eyes from any debris, UV rays and other harmful light. 5. Adjustable soft rubber nose bridge can easy find the right angle for you and ensure the sunglasses doesn't slide off your face to upgrade your using experience. 6. Can be used for multiple activities, such as golf, cycling, driving, fishing, skiing, running, basketball, tennis, racing and other outdoor sports.