Features: The photochromic cycling glasses feature advanced light-sensitive technology that smoothly and uniformly change the lens color in response to varying light conditions. Reduces glares and provide clear, soft sight while offering strong impacts resistance, ensuring your eye is protects during long ride. Light weight, these bicycles eyewears is designs for extended wear without any discomfort. The running sunglasses feature adaptiveness fit that comfortably conforms to various face shape. Great for cycling, skiing, hiking, and driving, glasses adapt seamlessly to shifting light conditions. Specifications: Component: ABS Lens Color: Black/White Size: about 13.5x5.8x12cm/5.31x2.28x4.72inch Package Includes: 1pc Cycling Glasses note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.