EUC Upper: 100% leather.Lining: 60% recycled polyester, 25% elastic, 15% nylon.Outersole: 42% recycled rubber, 32% natural rubber, 26% other materials.Do Well: leather sourced from a tannery that was certified by the Leather Working Group (LWG), an organization that works to promote sustainable environmental practices in the leather industry.Imported.Madewell.com only.Item NP276