The DEWALT Radius safety glass offers a 10 base curve lens which provides maximum coverage and protection.FEATURESndoor/Outdoor Lenses10 base curve lens provides maximum coverage and protection.Rubber tipped temples provide a secure comfortable fit.Soft, rubber nosepiece provides non-slip, comfortable wear.Tough, polycarbonate lens provides impact resistance.Safety glass exceeds ANSI Z87.1+ standards and provides 99.9% UVA/UVB protection.Design Patent No. D556,244, under license.