Biltwell Gringo Helmet Blast Shield (Smoke, Large) UV Tested: Biltwell Blast Shields are UV rated at UV +50 with over 91 percent UVA block and over 99 percent UVB block. Shields were evaluated for UV resistance as per test method AATCC 183 Custom designed to fit Large - XXL Biltwell DOT-approved Gringo full-face helmets Die-cut flex polycarbonate shield construction Heavy-duty stainless steel snaps