Upper in ChromeFree leather Panels made out of ChromeFree leather and in suede Logo V made of suede Lining in jersey (33% organic cotton and 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. The ChromeFree leather is smooth and light. Coming also from the farms located in the south of Brazil (Rio Grande do Sul), it undergoes an innovative tanning process where no chrome, heavy metals or dangerous acids are involved. By simplifying the tanning process, the use of chemicals and energy is limited, the use of water is reduced by about 40% and the use of salt by 80%. After tanning, the water is recyclable.