Photochromic sunglasses for outdoor activities, unisex, ROCKBROS Color:Black perfect for carrying on the

perfect for carrying on the go

The concealed hose saves even more space

Charging Time: 5H

Material: ABS plastic + steel

28" 700C*28H*14G

Photochromic sunglasses for outdoor activities, unisex, ROCKBROS Color:Black perfect for carrying on thePhotochromic 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