5.11 CAVU offers bold and aggressive new styling in a half frame with Smoke, Ballistic Orange and Clear Lenses. The 3 lenses offer various strengths of light transmission (15% Smoke, 53% Ballistic Orange, Clear 89%), are distortion free and are scratch, crack, and craze resistant. Features and Benefits Smoke lenses provide maximum glare reduction, won't distort colors, and are excellent in bright/glare conditions. Clear and Ballistic Orange lenses are preferred colors for use at the range and other applications where eye safety is the priority over protection from light. 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 resistant 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.