The V-12 model is made out of ecological and sustainable materials.- Upper in leather- Panels made out of 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 (25%)- Made in Brazil, in the region of Porto Alegre   Please be aware that due to an internal error at Veja a mistake has been made in the translation of European to UK sizes. Be aware that European sizes do remain the same and is consistent.  For example, for AW22 sizes a European size 42 is labelled as a UK7.5 however the sizing is equivalent to a UK8.  This will be corrected for Spring 2023. Veja V-12 Trainers - Leather Extra White/Marsala/Nautico