Years in the making, 9FIVE announces Pure Polarized lens technology to select 9FIVE frames. Pure Polarized is the world's first Grade A 100% pure polarized lens formula that literally ENHANCES true color perception with brilliant contrast and clarity, while almost completely eliminating glare, reflection and eyestrain. If you do not think 9FIVE Pure Polarized lenses are the WORLD'S BEST polarized sunglasses, simply return them to us for a full refund, including shipping, both ways. Bet.