Bolle spiral sunglasses matt black frame polarized brown emerald lens description the spiral brings wrap around protection together with cutting edge technology to offer a sunglass that stays in place while you go go go the thermogrip nosepads and temple tips ensure a perfect non slip fit thats designed for medium to large faces features polarization our polarized lenses align light rays from the sun giving you a crystal clear view at all times b 203 polycarbonate len