If you are between sizes, we recommend you choose a size above your usual one. Upper: Alveomesh (100% recycled polyester) Panels: Suede and leather Logo V: Amazonian rubber (26%), mineral silica (22%), synthetic rubber (14%) and others (38%) Insole: Amazonian rubber (10%), bio-based E.V.A.* (41% sugar cane), recycled E.V.A. (10%), organic cotton (16%) and others (13%) Midsole: Bio-based E.V.A. (52% sugar cane) and others (35%) Outsole: Amazonian rubber (12%), mineral silica (30%), synthetic rubber (49%) and others (9%) Lining: Tech (100% recycled polyester) Laces: Organic cotton (100%) Made in Brazil The Alveomesh is a technical fabric made out exclusively of recycled polyester. It brings breathability, flexibility, and lightness to the shoe. *Ethylene vinyl acetate