The Romer III provides great temporal protection through it's thicker temple design. Full peripheral vision is achieved by utilizing the Wiley X 90 degree wrap-back philosophy. The US Navy Seals use the Romer line of glasses exclusively. This package comes with 3 interchangeable lenses. Meets US Military high velocity projectile resistance requirements. Smoke Grey lenses suited for all sports without distorting colors. Ideal in bright sun where glare is a major factor. Light rust filters blue light waves which are the chief components of glare and haze. Shatterproof Selenite polycarbonate lenses that meet the MIL-PRF-32432(GL) ballistic standards, ANSI Z87.1-2010 high velocity and high mass impact standards, and EN-166 F high speed impact. 100 percent UVA/UVB protection with distortion-free clarity. T-Shell lens coating resists scratching in extreme environments. Foil lens coating gives unsurpassed anti-fog protection. Sleek design that is Night Vision Goggle (NVG) compatible. Wrapback design for maximum peripheral vision. Slot technology provides changeable lens functions. Rx Ready.