These designer prescription glasses are made to accommodate most prescription lenses.Made of titanium, the frame is hypoallergenic and super light and strong. Made of metal, the frame can be easily adjusted for a perfect fit with your prescription lenses. Your frame purchase includes free standard shipping charges, and manufacturer packaging. You can add doctor verified prescription lenses, add custom polarized lenses, and many other lens options if you desire them. Like all Silhouette products, the Silhouette 6657 provides the sophisticated and classic look that we all need. See all Silhouette Silhouette Glasses Silhouette glasses are made by Silhouette, an Austrian company which makes all of its products in a factory in Bavaria, Austria. Slim, sophisticated, and stylish are just a few words to describe the iconic brand of Silhouette prescription glasses, which is famous for their rimless glasses frame designs. Silhouette’s breathtaking Titan Minimal Art brand collection pushes the boundaries of rimless eyeglasses without limits - without frame, hinges, and screws. Silhouette is one of the very few major European prescription glasses frame makers that makes all of its own components and assembles completely within its own factory. This leads to unprecedented product quality and has built for Silhouette Eyewear, an unmatched reputation in the eyewear industry. Silhouette also has a reputation for innovation.