Photochromic sunglasses for outdoor activities, unisex, ROCKBROS Color:Black Easy installation:Thanks to the glasses

Easy installation:Thanks to the glasses holes on both sides

Weight: 206 g / 1 pedals

Charging Time: 5H

28" 700C*28H*14G

Material: ABS plastic + steel

Photochromic sunglasses for outdoor activities, unisex, ROCKBROS Color:Black Easy installation:Thanks to the glassesPhotochromic Technology: Photochromic lenses are based on the intensity of sunlight. The lenses darken in sunlight and briefly lighten indoors. You don't need to change lenses in different light conditions. Lightweight and Comfortable: The photochromic sunglasses weigh only 30 grams, and you won't feel a thing on your nose. These ultra lightweight cycling sunglasses reduce pressure on your nose and temples. Safety: The thickened PC lenses with UV400