Hemp Eyewear is handmade from organic plant fiber, making their frames one of the most sustainable and innovative on the market. And since every individual plant fiber forms its own pattern, each and every product is one-of-a-kind. As for the lenses, Hemp Eyewear uses the best of the best, Carl Zeiss. Equally important, the polarized lenses offer full 100% UV protection. You can even swap out their lenses for your optical ones. Hemp Eyewear can fit practically any prescription lens into their frame, and they offer the following: single vision, progressive, and transitional.