V-12 Leather White Black Gum Sole - Upper in ChromeFree leather - Panels made out of ChromeFree leather - Logo V made of rubber - Lining in jersey (33% organic cotton & 67% recycled polyester) - Insole made out of wild rubber and other synthetic materials - Sole made of wild rubber from the Amazonian forest (24%) - Made in Brazil, in the region of Porto Alegre - The V-12 model is made out of ecological and sustainable materials.