Tifosi Slip Wrap Sunglasses LENS TECH: All lenses are constructed from scratch-resistant, shatterproof polycarbonate and provide 100% protection from harmful UVA and UVB rays. FOG & GLARE DEFENSE: The vented lenses increase airflow to prevent fogging while Tifosis proprietary Glare Guard lens coating reduces eye strain. FRAME TECH: The Grilamid TR-90 Frame offers an incredibly light and durable nylon material that resists chemical and UV damage. The homopolyamide nylon frame is characterized by an extremely high alternative bending strength. NO-SLIP FIT: The adjustable ear pieces allow for a custom fit which limit slippage while increasing comfort. The more you sweat, the harder it grips thanks to hydrophilic rubber.