Overview: Lane Splitter Face Shields features an optically precise injection-molded polycarbonate shield. UV Tested: Every Lane Splitter shield regardless of tint, mirror or gradient treatment is rated at UV +50 with over 92% UVA block and over 99% UVB block capability. Shields were evaluated for UV resistance as per test method AATCC 183. Use and Install Tips: 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.