These sunglasses feature a B88&trade frame, made of finest grade of nylon providing you with advantage of lightweight and extra strength. The Speed features thermogrip that keeps frame mist-free. The shape of the broad lenses provides maximum protection and are ideal for sports. Speed Features: Medium Fit Sunglasses, B20.3 Polycarbonate Lenses - Impact-Resistant - Light in Weight - Provides Unmatched Precision & Clarity, B88&trade Nylon Frame - Strong, Lightweight & Flexible, Carbo Glas® Coating - Protects From Scratches & Other Damages, Polarized Lenses - Eliminates Glare & Improves Contrast, Oleophobic/Hydrophobic Treatment - Protection Against Dirt, Grease & Waterspots, Anti-Fog Treatment, Thermogrip® Material Temple Tips, Nose Pads & Nosepiece - Moisture Absorbing Hydrophilic Material, Exceeds ANSI Standards"