Anti-fog injection-molded polycarbonate shields in solid and mirror finishes. Accept no substitutes: make sure the next bubble shield you own features the "Biltwell" script logo. Plated snaps feature the Biltwell anvil logo. Fits stock three-snap visor configuration on most helmets. UV Tested: Biltwell Bubble Shields are UV rated at UV +50 with over 91% UVA block and over 99% UVB block; shields were evaluated for UV resistance as per test method AATCC 183.