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 Guess products, the Guess GU1971 provides the sophisticated and classic look that we all need. Guess GU1971 frames have a rectangle shape, which helps to balance rounded 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.Guess GU1971 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 saddle bridge without nosepads, a popular feature providing a sleek look.Designed for adults, this model has a Spring 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 Guess Guess Glasses Guess glasses are a fantastically crafted, high quality, design orientated glasses collection featuring many different eyewear shapes and styles. Ranging from thick, smooth and chic frames, to classic thin metal frames and everything in between, you can decide from a large variety. They are available in just about every modern shape - oval, round, rectangular, aviator, cat eye and numerous others. Guess glasses and Guess sunglasses can all be customized with prescription lenses, just like all of our glasses.