Transmittance: 80%-18% (80% is light gray color when in low UV, 18% is dark gray color when in high UV)
Color: Red Black, Black, Yellow, White
Weight: about 30g/pair
Lens Material: Polycarbonate, PC
Material frame: TR Plastic Frame
Protection cyclist eyes from UV-400 UV (100% of UV protection)
Non-slip nose pads is adjustable.
Purpose: cycling, skiing, sledding children, fishing ,runing ,and all outdoor sports
1x Pair Photochromic Glasses
1x Cleaning Cloth
1x Glasses Bag
1x Myopia Frame
1x Movement Head Band
1x Hard Protection Box
Note: Color change speed depends on sunlight and UV intensity.
(time: summer 1-2 minutes, winter 2-3 minutes)