Whether you want to be able to change your lens color for your activity or environment or replace existing lenses, oakley® authentic lenses are the only replacement lenses manufactured to meet oakley’s quality and optical clarity standards. Oakley lenses and frames are designed to work together seamlessly to deliver optimal fit and comfort, impact protection, and hdo® optics. Prizm™ replacement lenses are designed to enhance color, contrast and clarity. Prizm™ lens technology is proprietary to oakley and engineered to maximize your vision in a full range of sport and everyday environments to help you make the most of any activity. Please note: these replacement lenses are for use only with kaast sunglasses (style code oo9227). Oakley Men's Kaast Replacement Lenses