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 Avalon Eyewear products, the Avalon Eyewear AV1818 provides the sophisticated and classic look that we all need. Avalon Eyewear AV1818 frames have a oval 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.The frame has a Universal.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. See all Avalon Eyewear Avalon Glasses Avalon glasses are high quality glasses made by one of the world's leading eyewear makers - Avalon Eyewear. Avalon prides themselves on having the right look for any occasion. Created for both men and women, Avalon glasses can be worn by individuals of all ages. Founded over 70 years ago, Avalon Eyewear prides itself on its strong reputation. The company has a reputation that could only have been built over decades. Renowned for being at the top of the industry, Avalon glasses are not only beautifully designed, but they are also made from the highest quality material.