Like while it might not always be easy being green, it's still important. These shoes are made from recycled material, part of adidas' commitment to help end plastic waste. They still look and feel just like the original Stan Smiths, but a "Kermit" graphic on the side reminds you to be a little more green like Kermit the Frog.This product is made with Primegreen, a series of high-performance recycled materials. 50% of upper is recycled content. No virgin polyester.