Sleek angles and premium materials define Alliant as a performance sunglass for cyclists, runners, and endurance athletes. Vented lenses improve airflow while the adjustable ear and nose pads of hydrophilic rubber increase grip as you sweat ensuring a perfect, stable fit. FEATURES: Made of Grilamid TR-90, a homopolyamide nylon characterized by an extremely high alternative bending strength, low density, and high resistance to chemical and UV damage. Hydrophilic rubber ear and nose pieces for a no-slip fit. Adjustable ear and nose pieces for a customizable, comfortable fit. Vented lenses improve air circulation, prevent fogging.