As Veja reports,

"Upper: O.T. leather (Organic Traced leather)

Pannels: O.T. leather (Organic Traced leather)

Logo V: Synthetic rubber (74%) and Amazonian rubber (26%)

Insole: Amazonian rubber (11%), bio-based E.V.A.* (sugar cane 42%), recycled E.V.A. (11%), organic cotton (12%) and others (14%)

Outsole: Amazonian rubber (12%), silica mineral (30%), synthetic rubber (49%) and others (9%)

Lining: Tech (recycled polyester 100%)

Laces: Organic cotton (100%)

Made in Brazil

O.T. leather (Organic Traced leather) undergoes a mechanical beating process that makes it fine and bendable. Tanned in Brazil, it uses less dyes than our conventional leather. VEJA sources O.T. leather from the Uruguayan Pampa, a region renowned for the quality of its leather and livestock farming.
The cattle from which O.T. leather is obtained are not sourced from deforested areas and are not exposed to pesticides, GMOs, chemical fertilizers, or antibiotics.

*Ethylene vinyl acetate"