Upper: Alveomesh (100% recycled polyester) Panels: T.P.U. V&heel support insert: Pebax® Rnex® (62% ricinus oil) Insole: 12% Amazonian rubber, 42% sugar cane, 23% recycled polyester L-Foam: 30% natural latex Midsole: 52% sugar cane Outsole: 31% Amazonian rubber Lining: Tech (100% recycled polyester) Laces & backloop: 100% recycled polyester