Veja Rio Branco Alveomesh Black White Oxford Grey - Mens Size 11 Product details Upper: Alveomesh (100% recycled polyester) Panels: Suede and Leather Insole: Amazonian rubber (10%), bio-based E.V.A. (38%, including 31% sugarcane), recycled E.V.A. (11%), organic cotton (18%) and others (23%) Midsole: E.V.A. bio-sourced (66%, including 53% sugar cane) and others (34%) Outsole: Amazonian rubber (12%), mineral silica (30%), synthetic rubber (49%) and others (9%) Lining: Recycled polyester (100%) 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.