Features b88(tm) Frames: High-grade nylon is lightweight, durable and flexible b20.3(tm) Polycarbonate lenses: Made from a premium-grade resin, resulting in a lens that is 20 times more impact-resistant than glass and 3 times lighter, with unrivaled optical precision and clarity Carbo Glas(r) Coating: An armor shell on both sides of the lens to protect against scratches Thermogrip: Comfortable hydrophilic nose pads and temple tips keep your sunglasses firmly in place Fit: Small/Medium Lens/Frame Measurement: 57/32/60/16/130 Lens Options Polarized A-14: Amber lens; enhanced contrast Polarized TNS: Gray lens; neutral contrast TLB Dark: Dark brown lens; enhanced contrast TNS: Gray lens; neutral contrast