If you are between sizes, we recommend you choose a size above your usual one. Upper in flannel: made out of recycled cotton (59%) and recycled polyester (41%) – Synthetic leather panels from Germany – Logo V made of wild rubber – Lining in recycled cotton – 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 – Upper in Flannel (70% recycled cotton & 30% recycled plastic bottles) – Panels in Coated canvas and vegan suede – Side V logo made from Rubber and rice waste (22%). – Midsole made from sugar cane (52%) – Outsole made fromAmazonian rubber (12%) and rice waste (30%) – Insole made from Sugar cane, Amazonian rubber, recycled EVA & organic cotton – Lining : Tech (100% recycled plastic bottles) – Laces in organic cotton (100%) The Flannel is a 100% recycled fabric brushed to create extra softness (70% recycled cotton and 30% recycled plastic bottles). Made in Brazil. The Suede Vegan is coming from the State of São Paulo in Jacareí, this suede is a 100% vegan synthetic textile and an alternative to animal-produced suede. It is a nonwoven fabric made of microfibers that are needle-punched together and impregnated with P.U. resin. This solvent-free process is less toxic than the ones used to produce classic synthetics suedes. Made in Brazil. The coated polyester canvas is a substitute for our vegan suede. We mainly use it for features in bright colours, which otherwise could fade. Less ecological, we are very cautious with it and use it in amounts. Made in Brazil. On some models, the lining Tech is made of 100% recycled plastic bottles. It has been improved to acquire better resistance to friction and provide maximum comfort and flexibility due to its knit structure. This liningis used for the Running line in particular. Made in Brazil.