These designer prescription glasses are made to accommodate most prescription lenses.Made of Rubber.The frame has a Unifit. 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.