Oakley(R) Exchange features a mixed material design inspired by the best-selling Currency eyeglass and leverages Oakley's heritage with B1B grip textured Unobtainium(R) earsocks. The lightweight O Matter(TM) 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(TM) Lens Technology or order with Oakley(R) Authentic Prescription lenses which come laser etched with the iconic Oakley ellipse logo for proof of authenticity and quality.