This frame is 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.</br>Fits extra small to medium faces. adjustable ear pieces for a customizable?? comfortable fit. hydrophilic rubber nose pieces for a no-slip fit.</br>Case included</br>Lenses are prescription ready (rx-able)</br>Alpe 2.0?? Crystal Clear Single Lens Sunglass</br>Includes a hard shell zippered case and microfiber cleaning bag.</br></br>Product Description</br></br>Alpine 2.0?? Crystal Clear single lens sunglass. This 8550405377 comes with a Smoke blue lens.</br><br/>http://www.amazon.com/gp/product/B01LFST146