The sustainable sneaker. With the Aim of reducing the environmental impact in our production processes our Spring/Summer Collection for MARC O’POLO Shoes offers a valuable statement sneaker made from chromium-free tanned oak leather. Chromium-free tanned leather means, that instead of chromium salts, the plant products of the oak are used for tanning. This approach is more environmentally friendly as it is designed to reduce water consumption and use of chemicals. Time, light and a regularly use are emerging the typical patina (natural aging of the surface). The shoe has a beautiful inner sole made out of cork, which can be removed. Furthermore the sole is made of real, naturally rubber. Entirely in the spirit of MARC O’POLO the straight design, with special ecological features, embodies the aspects Simplicity, Modern & Natural.