The Lane Splitter face shield features an optically precise injection-molded polycarbonate shield Every Lane Splitter shield regardless of tint, mirror or gradient treatment is rated UV +50 with over 92% UVA block and over 99% UVB block capability All shields were evaluated for UV resistance as per test method AATCC 183 For the best install, apply a small drop of blue Loc-Tite compound to the threads on your Lane Splitter's pivot screws to ensure a secure fit during assembly (do not over-tighten)