Timeless sneakers with vegan uppers . The adidas Stan Smith has been an integral part of the adidas Originals line for 5 decades. The clean style with clean lines and Stan Smith details is classic, but the shoe has been improved over the years.New, recycled outer materials The new version comes with a vegan upper and a recycled outsole made from rubber waste. It is completely vegan and part of adidas' Primegreen Series, which uses a variety of functional recycled materials. 50 % of the upper is made from recycled materials. Made without the use of newly produced polyester.