Upper in C.W.L.* (organic cotton covered with resin from corn & castor oil) Panels made out of C.W.L. Logo V made of rubber and rice waste (22%) 100% organic cotton laces Soft inner lining (33% organic cotton & 67% recycled polyester) Insole made of sugar cane (40%), organic cotton (12%), amazonian rubber (11%), & recycled E.V.A.* (11%) 59% bio-sourced and recycled outsole: made from amazonian rubber (24%), rice waste (23%) & recycled rubber (12%) Loop made from 100% recycled polyester Made in Brazil, in the region of Porto Alegre *Cotton Worked as Leather. 54% bio-based, this material is a vegan alternative to leather. A 100% organic cotton canvas, coated with P.U., corn starch and ricinus oil.