ESS EE9018-02: Enhance your eye protection with the Rollbar interchangeable-lens sunglasses by ESS. Experience quick and hassle-free lens changes with the automatically locking Rollbar Lens Gate. Enjoy its sophisticated yet durable design engineered to withstand harsh environments. Trust in the military-grade polycarbonate for a clear and precise field of view, as well as Ansi Z87+ and MIL Spec ballistic protection. Experience ultimate comfort with a balanced fit and low-friction temple arms that do not interfere with hats, helmets, hearing protection or communication gear. The Rollbar sunglasses\' frame comes with a rotating Lens Gate feature for extremely swift lens replacement and secure lens hold during impact.