Name: ROCKBROS Cycling Photochromatic Glasses Gender: Unisex Attributes Lenses: Photochromatic Color: Black Red, Blue Weight: Only 29g Lens height: About 5cm Lens width: About 15.5cm Material: TR frame+PC rubber temple+TAC polarized lens
1. PC photochromic lens + TAC polarized lens 2. Adjustable nose pads 3. The photochromic lens can change its color with the change of the intensity of external ultraviolet rays 4. Polarized lens can effectively filter harmful light in the environment and block the reflected glare 5. Colorful coating technology 6. Pneumatic vent design 7. 100% UV Protection
1. Color change time: winter-1 minute, summer-40 seconds. 2. Speed depends on sunlight and UV intensity! 3. The rate of discoloration is related to the intensity of ultraviolet light and the temperature. (if UV intensity and temperature is low, The speed of discoloration will become slower).