Crews CPA118B Plasma Safety Glasses, Blue Mirror Lens, Black Frame Lightweight polycarbonate frame and higher level of protection from side impacts Non-slip TPR (thermo plastic rubber) nose pad and temple sleeves Resilient polycarbonate spring hinge temple that will accommodate a wider assortment of head sizes Dual polycarbonate lens that filters 99% of U.V. radiation and provides an excellent orbital seal Meets or exceeds ANSI Z87.1 safety standards