OX8139 HSTN RX is inspired by the learnings from Oakleys' immersion with Eric Koston and Atiba Jefferson, elevating the findings and priorities from the Sentio project: Heritage, Authenticity, Unexpected, DIY, and Sustainability. A modern round lens shape, blending tradition with Oakley heritage DNA. They feature BiO-Matter design for strength, comfort, and durability, while Trigger stem with hooked ear design balances comfort and retention. With Unobtainium nosepads for additional comfort & grip. 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 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 sunglass and eyeglass assortment.