Upper: C.W.L. ; (organic cotton coated with a resin from P.U., corn starch & ricinus oil) Panels: C.W.L. ; V: 26% Amazonian rubber Insole: 12% Amazonian rubber, 42% sugar cane & 23% recycled polyester L-Foam: 30% natural latex Midsole: 38% sugar cane Outsole: 31% Amazonian rubber Lining: Tech (100% recycled polyester) Laces: 100% organic cotton Backloop: 100% recycled polyester;