Constructed from extremely tough Grilamid TR-90 homopolyamide nylon, The Tifosi Lust bike glasses for women contain extremely high alternative bending strength and resistance to chemical and UV damage. The lenses are made of shatter-resistant and Scratch resistant polycarbonate and Optically Decentered to eliminate distortion and prevent magnification. They also contain a glare guard to prevent eye strain and fatigue of the eyes. To prevent slippage they also feature hydrophilic rubber ear and nose pieces ensuring that your glasses stay where they belong. The Lust looks just as good on the beach as they do in the heat of a marathon.