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 Art-Craft products, the Art-Craft CP18 Side Shields provides the sophisticated and classic look that we all need. Art-Craft CP18 Side Shields frames have a Geometric shape, which very fashionable now and great for progressive lenses. 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.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 Art-Craft ArtCraft Glasses ArtCraft glasses have been Made in USA since 1918, over 100 years. For over a century, ArtCraft glasses have been made in the United States, and ArtCraft glasses have become synonymous with American craftsmanship and American quality. ArtCraft glasses are one of the country's largest makers of eyewear. The Art-Craft "Rimway" glasses and the ArtCraft 100A glasses models are two of the most popular eyewear frames of all time. The frames have always been designed for people of all years. All ArtCraft glasses can be customized with prescription lenses, just like all of our glasses and sunglasses.