5.11 CAVU offers bold and aggressive new styling in a full frame, polarized lens. The TPR inserts on nosepiece and bayonet temples provide a secure fit and excellent peripheral vision while the lenses reduce glare and exceed ANSI High Velocity Impact Safety & Optical Standards. Polarization dramatically reduces glare. T-Shell coating means resistance to scratching, cracking, and crazing. Selenite polycarbonate is die-cut to produce lenses without distortion from any angle and is ten times more impact resistance than glass or resin lenses. Frames are built with Grilamid TR-90, a homopolyamide nylon characterized by an extremely high alternative bending strength, low density, and high resistance to chemical and UV damage. They are virtually indestructible. Quality and Product Development Expertise. 5.11 Tactical eyewear is designed, developed, and manufactured by Wiley X Eyewear who achieves industry-leading standards through their precision manufacturing and state-of-the-art quality control.