【What are photochromic lenses?】 When exposed to sunlight (UV rays) outdoors, the lenses darken. 【 Photochromic Type 】 They can be used as stylish clear glasses indoors and as sunglasses outdoors (when going out). * Due to the nature of photochromic lenses, they have a slight tint even when in their clear state. ● Brand: COLEMAN ● Color PH08-1 Frame: Black Lens: Clear → Gray Photochromic ● Material Frame: Plastic Temples: Plastic Lens: Plastic (Photochromic Lens) ● Visible Light Transmittance PH08-1 Before photochromic: 90%, After photochromic: 20% ● Features Photochromic lenses Adjustable nose pads UV transmittance: 1.0% Accessories: Drawstring pouch Recommended gender: Men, Women (Unisex) Weight is also light at approximately 19g Frame width (approx.): 134mm, Frame height (approx.): 39mm Bridge width (approx.): 17mm Lens vertical width (approx.): 35mm, horizontal width (approx.): 51mm Temple length (approx.): 143mm, Face width (approx.): 132mm