The Flyby TM offers durable nylon frames and thick polycarbonate lenses, providing broad coverage and safety along with a sporty style. The lightweight black frames are compatible with helmets, night vision goggles, and communication equipment. Built from high-impact 2.2mm polycarbonate, the Smoke Gray lenses meet U.S. MIL Spec MIL-PRF-31013 and ANSI Z87.1+ standards. These optically-correct lenses filter 100% UVA/UVB rays.