Regular fit, lace fastening, Synthetic upper, Rubber outsole. Made in Primegreen: 50% of the upper is made of recycled materials and no virgin polyester is used.adidas Stan Smith continues to be a style icon after more than 50 years. This new model, with outsoles made from waste rubber, shows adidas' commitment to using only recycled polyester by 2024. This product is made from high-performance recycled Primegreen materials. 50% of the upper is made of recycled materials, and no virgin polyester is used.