Davos Fototec Sunglasses A bold new style that combines full coverage protection with cutting edge sport design, the Davos is perfect for those looking for sunglasses that can match their level of performance. The Davos hybrid full frame design excels in running, cycling, & any other athletic endeavor one wants to undertake. made from Grilamid TR-90, a homopolyamide nylon characterized by an extremely high alternative bending strength, low density, & high resistance to chemical & UV damage. Hydrophilic rubber ear & nose pieces for a no-slip fit. Adjustable ear & nose pieces for a customizable, comfortable fit. Vented lenses improve air circulation, prevent fogging. Fototec lenses adapt to your environment, transmitting less light to your eye when its more sunny & transmitting more light as the day becomes night, providing an ideal moment-to-moment tint. Fototec lenses come in Smoke (a classic gray tint), Light Night (a tint with the best range for low-light conditions), Brown (a contrast enhancing tint), & High Speed Red (the top performer for the fastest athletes).