Oakley� Exchange features a mixed material design inspired by the best-selling Currency eyeglass and leverages Oakley�s heritage with B1B grip textured Unobtainium� earsocks. The lightweight O Matter� front and stainless-steel temples are designed to provide all-day comfort while the earsocks help keep the eyewear securely in place. Get Exchange with Prizm� Lens Technology or order with Oakley� Authentic Prescription lenses which come laser etched with the iconic Oakley ellipse logo for proof of authenticity and quality.