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 Oakleys 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. Prizmreplacement lenses are designed to enhance color, contrast and clarity. Prizmlens 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. Authentic Oakley replacement lenses are covered under the same warranty policy as Oakley eyewear. Please note: these replacement lenses are for use only with HSTN sunglasses (style code OO9242).