Oakley Exchange R OX8184 818404. Exchange R, a round-lens shape extension of the best-selling Exchange eyeglass featuring Oakley’s heritage-inspired 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 a complete Oakley pair when you order with Oakley® Authentic Prescription lenses which come laser etched with the iconic ellipse logo for proof of authenticity and quality. Eyeglasses Oakley Ox8184 Exchange R, offer a vintage touch with theirs Frame Rotonda in O_matter. The timeless design, inspired by the retro style, is enhanced by the black color, perfect for those who want to add personality and character to their daily look. Recommended for square and rectangular faces, thanks to their ability to soften the corners and create balance. Ideal for men.