These designer prescription glasses are made to accommodate most prescription lenses.Made of plastic, otherwise known as cellulose acetate, or zyl, 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 SPX Illusion 2889 provides the sophisticated and classic look that we all need. Silhouette SPX Illusion 2889 frames have a round shape, which helps to balance rectangular facial features. Frame shape is the most noticeable feature of a pair of glasses, followed by frame color and frame size. Top brands always have a large collection of rectangle frame shape glasses, as well as oval frame shape glasses.Silhouette SPX Illusion 2889 frames feature a fashionable full frame design, which is the largest component of designer eyeglasses brands collections. A rim all the way around the lenses, provides for maximum stability and durability.The frame has a keyhole bridge, a popular feature of a classic design. The keyhole bridge design offers a classic look and also a comfortable fit. It serves to distribute the weight of the frame to the sides of the nose, and not just on the top of the nose like the saddle bridge designs. It is a good choice for people with wider noses.Designed for adults, this model has a ScrewlessHinge type hinge for greater comfort.Standard skull temples can be easily adjusted to fit perfectly behind your ears.2-year warranty. The warrantee by the manufacturer covers manufacturer's defects for the frame. As an online optical superstore, we can help to process a warrantee for you with the manufacturer, according to their return policy. 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.