Bobster Photochromic Fat Boy SunglassesFast and Furious, the Bobster Fat Boy sunglasses feature photochromic lens technology. The lens transmission allows 85% of light through indoors and 32% of light through while outdoors in bright light. Featuring anti-fog, polycarbonate lenses, this eyewear enables usage through varying light. In addition, closed cell foam around the frame improves comfort and prevents wind or debris from impairing clarity.Features: Photochromic lenses Polycarbonate lenses Grilamid frames Closed cell memory foam Microfiber pouch included Note: Bobster does not recommend the Roadmaster Glasses for nighttime use, as they are never fully clear.