If you run or bike odds are you have heard of the brand Tifosi. They specialize in grilamid frames and vented lenses to increase ventilation to prevent fogging.
New for 2014 – The RX03, the only rx adapter that works with the Podium, Podium S and Podium XC. Love the look of a shield (1 lens ) frame but have an rx? This is for you.
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.