Veja women's sneakers model Campo. Chrome-free leather upper and inserts. Amazonian rubber logo. Amazonian rubber insole, sugar cane E.V.A., cotton, and E.V.A. midsole. Amazonian rubber, mineral silica, synthetic rubber, and other materials in the outsole. Synthetic rubber, mineral silica, and other materials in the side stripe. Polyester lining. cotton laces. The ChromeFree bovine leather is soft and light, sourced from farms in southern Brazil (Rio Grande do Sul) and tanned without chrome, heavy metals, or dangerous acids. This innovative tanning process reduces chemical and energy use, water consumption by about 40%, and salt use by 80%. The water used in tanning is recyclable.