Inspired from the famous Bolle Chrono-Shield model, the Shifter is packed with simple yet progressive features to enjoy the ride. Curved temples, vented lens & Phantom lenses, have made Shifter the natural choice of team AG2R La Mondiale. Lightweight and flexible TR90 nylon frame delivers great comfort and fit. Bolle s polycarbonate lenses that are made from premium grade resin, resulting in a lens that is 20 times more impact resistant than glass and three times lighter, with unrivaled precision and clarity. Sunglasses are for a large fit. Bolle Shifter Sunglasses come with two lens types. The TNS lens has a grey tint base with a light transmission of 12% and provide high contrast. These lenses are also polarized. HD polarized lenses align light rays from the sun, giving you a crystal-clear view at-all-times. Bolle s polarization efficiently filters out 98% of sunlight reflections. So, whether it s sea, trout stream or road, you ll be able to see what s really-ahead. By minimizing glare, polarized lenses reduce eye fatigue and enhance vision clarity to let you enjoy the action all day long. The Phantom Clear Lens model has a grey tint base, transmits 62% - 9% light and provides high contrast. Anti-Fog Treatment means no fogging on your eyewear under any circumstance. Not only repels the fog that clouds your vision but is simply revived by an application of moisture. The sunglasses have rubber nose pads to keep you glasses firmly in place. Oleophobic treatment on the outside of the lens. Forget about dirt, grease and water spots, this coating stops it before it sticks to your lenses and causes a distraction.