UV Cut Photochromic Sunglasses & Fashion Glasses Frame: Khaki These glasses function as blue light-blocking glasses indoors and transform into tinted sunglasses outdoors, reacting to UV light. They protect your eyes from UV rays! Recommended for those concerned about UV damage, those who find regular sunglasses too dark, and those who find switching between glasses and sunglasses inconvenient. *The color change may be less noticeable in places with low UV light, such as inside a car. Please understand this before purchasing. Fashion glasses, round glasses, Boston-style, sports sunglasses, driving, color lenses, dusty green, brown, cute, stylish, 2-way, PC glasses, Korean style