Comfortable, lightweight feel for long term wear; Meets ANSI Z78.1 (2003) standards for high mass, high velocity impact protection; Plutonite lens material blocks 100% of UVA/UVB/UVC/HEV radiation; High purity polycarbonate lenses; Weighs only 3.7 oz; Meets EN-166 BT K and U.S. Army MCEPS standards; Exceeds MIL-DTL-43511 compliance for ballistic impact resistance in every lens configuration; Features HDO (High Definition Optics)