【Photochromic Glasses】 Lenses will change from clear to dark gray in response to the intensity of the ultraviolet, and the visual light transmission of the photochromic lens is from 85% to 15%. Effectively maintain a suitable brightness to protect your eyes in strong sunshine. Attention!!! The darkness of lens color depends on UV intensity! 【UV400 Protection】These MTB glasses are made of high-grade lenses and ultra-light memory TR90 frames. All clear cycling sunglasses have UV400 protection, can block harmful UVA & UVB rays, safe, durable, and impact-resistant, and protect your eyes from sand, heavy wind, and strong sunlight. 【Comfortable Feeling】 These photochromic mountain bike glasses are equipped with flexible temples, suitable for different face shapes. Soft rubber nose pads are anti-slip.  【Multifunctional Occasions】KAPVOE Sports sunglasses are perfect for cycling, MTB, riding a motorcycle, driving, skiing, baseball, softball, basketball, mountain climbing, fishing, playing golf, hiking, tennis, boating, and other activities.