Coating outside : 71% polyurethane / baking 65% polyester - 35% cotton Lining and inner sole: 100% microfibers from the circular economy Outsole: neolite 2.5 cm flat heel Elastic side for easy donning * All our models are vegan, labeled PETA APPROVED VEGAN and certified OEKO TEX 100 (materials guaranteed to be free of toxic products for the body and the environment). DEFECT(S): The pair is a prototype. The front of the pair has creases. See photo(s)