Fashion Folding Pochromic Sunglasses Outdoor Polarized Driving Sunglasses

High-concerned chemical : None Element type : Basic Classic Applicable Scenarios : Outdoor Product Type : Sunscreen sunglasses Style type : Rectangle Model Number : 291 Lenses Material : Resin Department Name : Adult Gender : Men Frame Material : Stainless steel Lenses Optical Attribute : polarized,Photochromic Origin : Mainland China Item Type : EYEWEAR Eyewear Type : Sunglasses Color changing lenses, when exposed to ultraviolet and shortwave visible light in sunlight, darken their color and reduce their light transmittance; In indoor or dark areas, the transmittance of the lens light increases, leading to fading and restoring brightness. Photochromic glasses can adjust the transparency of the lens by changing color, allowing the human eye to adapt to changes in ambient light, reducing visual fatigue, and protecting the eyes.