The Oakley HSTN Prizm Sunglasses are a new take on the throwback Oakley style, integrating new technology and old designs. The frame is constructed from Oakley's new BiO-Matter material which uses a plant-based resin for a fit and feel that is light and environmentally friendly. Unobtainium nose pads help keep the sunglasses on our face, even when sweating, and enhance comfort over traditional molded plastic nose pieces. Oakley's renowned Prizm technology helps to increase contrast and makes colors pop, allowing us to see our surroundings better. The throwback circle lenses and the trigger temple arm add the unparalleled style you can only get with Oakley.