Classic flip-up style offers versatility for workers in unique environments. Sideshields for extra protection against flying particles. flip-up lenses are offered in Infra-duraŽ Welding Shade 3.0, Shade 5.0 or SCT-Cobalt Blue. The Uvex Horizon is lightweight, allowing greater comfort for longer wearing time and is suitable for Rx lenses. Impact resistant polycarbonate lenses block 99.9% of harmful UVA and UVB radiation. Lenses have a scratch resistant hard coat for a longer life. Meets ANSI Z87.1-2010 standards.