The latest high-definition optical creation from the mad scientists in Oakley"s secret underground labs, the Jawbone Photochromic Sunglasses adapt to any light environment nearly instantaneously. They"re also known to occasionally fracture space and time, if you go for too long without wearing them. Product FeaturesFrame: O Matter (polycarbonate)Hinge: UnobtaniumLens: Plutonite (polycarbonate)Interchangeable Lens: yes, Switchlock SystemPolarized: noFace Size: medium to largeFrame Measurements: Case Type: softNose Pads: yes, interchangeableTemple Pads: noRecommended Use: lifestyle, sportsManufacturer Warranty: 1 year