Upper: Alveomesh (100% recycled polyester) Panels: T.P.U. & rubber V: 26% Amazonian rubber Insole: 12% Amazonian rubber, 42% sugar cane & 23% recycled polyester Toe cap & heel support insert: Rubber Midsole: 56% sugar cane Outsole: 30% Amazonian rubber Lining: Tech (100% (recycled polyester) Laces & backloop: 100% recycled polyester