KAPVOE Photochromic Cycling Glasses Men Women Sunglasses MTB Mountain Bike Clear Youth Riding Black 01

【Colorful Photochromic Glasses】 The lens will change frome clear to red blue lens in response to the intensity of the ultraviolet, and the visual light transmission of the photochromic lens is from 85 percent to 15 percent. They are activated by UV rays to darken when exposed to the sun, to protect your eyes from sunlight and glare. When the light darkens or you step inside, the lenses softly transition back to clear. This gentle transition process helps alleviate eye fatigue from rapid light changes 【UV400 Protection】 The use of polycarbonate HD coating mirror lenses have excellent optical quality, can restore true colors, and reduce reflections. UV400 protective coating, blocking 99.99 percent harmful UVA and UVB rays, which can eliminate glare and reduce eye fatigue, making the scenery clearer and softer. Protect your eyes from sand, wind, and sunlight resistance 【TR90 Frame and Built In Inner Frame】 The lightweight and sturdy Stress Resistant TR90 frame makes the weight of the entire bicycle glasses only 34g. Don’t need to install tools. Built in inner frame without lenses 【Adjustable Nose Pads】 The nose pads of these MTB glasses are made of soft rubber, skin friendly, non slip, and can be adjusted according to your nose shape 【Multifunctional Occasions】 Photochromic sports glasses perfect for cycling, mtb, riding a motorcycle, driving, skiing, baseball, softball, basketball, mountain climbing, fishing, playing golf, hiking, tennis, boating, and other activities