The Bolt Reflex features the Anti-Ocular Intrusion System which is designed to prevent your lenses from dangerously shooting toward your eyes in the event of a high velocity impact. Snap-Back Interchangeable Lens System. Polarized Crystal Carbonate P.C.C. Lenses are impact resistant and block 100% of harmful UV light. P.C.C. lenses eliminate glare for sharp, clear vision with increased contrast and depth perception in any lighting condition. Rhyno-Tuff Air Frames, made with an extremely lightweight high performance thermoplastic material, is durable enough to withstand high velocity collisions and temperature extremes. Exhaust vents incorporated into the design framework enhance airflow which virtually eliminates fog and condensation. This unique design feature is the only system available that allows maximum ventilation while blocking extraneous incoming light. Cushinol Temple Boots create a non-slip grip that keeps sunglasses in place during athletic activity.