The OX3218 Socket 5.5 eyeglass frames are a nod to Oakleys' heritage of industrial design with signature style. Constructed of lightweight, durable C-5 material with a semi-rimless frame that features integrated spring hinges that offer a comfortable fit. Unobtainium earsocks and new air-filled silicone nosepads ensure a snug, secure fit. Three-Point Fit holds lenses in precise optical alignment. This pair are available with Oakley Authentic Prescription lenses that come laser etched with the ellipse logo on the left wearing lens for proof of Oakley authenticity and quality. Oakley eyeglass frames sold by authorized sellers, like Amazon, are eligible for all manufacturer warranties and guarantees. Click on the Oakley link above the product title to shop the entire Oakley sunglass and eyeglass assortment.