Upper: ChromeFree leather Panels: ChromeFree leather V: 26% Amazonian rubber Insole: 11% Amazonian rubber, 42% sugar cane, 11% recycled EVA & 12% organic cotton Welt: Rubber Sole: 40% Amazonian rubber & 10% recycled rubber Lining : Tech (100% recycled polyester) Laces: 100% organic cotton