We designed fast jacket to be a weapon against any light conditions that threaten your visual performance. Now it's time to arm it. Lock and load your choice of accessory lenses. You have a wide array to choose from, and each set is engineered with high definition optics® (hdo®) to maximize vision with razor sharpness. We make all our lenses with pure plutonite® to filter out 100% of all uv. Important note: use care when installing/removing accessory lenses. Scratched lenses can not be returned and are not covered under oakley's warranty policy