All these benefits come in a lightweight design that ensures all-day comfort. The knockoff Oakley sunglasses’ Three-Point Fit keeps the lenses in precise optical alignment, while Unobtainium® frame components improve grip, even when you sweat. Multiple lens options are available: The Clear lens of the discounted Knockoff Oakleys M Frame is ideal for very low light and indoor use, while the Yellow lens enhances color contrast and depth perception in low light. Our Persimmon lens is specially designed to improve depth perception in low light conditions, and the Grey lens optimizes your ability to discern color differences in medium to bright light.