The easiest way to elevate your denim and dresses, this leather thong sandal features a square toe and walkable kitten heel. - Upper: 100% leather. - Lining: 100% leather. - Sole: 79% rubber (31% of which is recycled, 25% of which is synthetic, 23% of which is natural), 21% calcium carbonate. - 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.