Take a step towards sustainability in these unisex trainers from the Parisian label O.T.A. The production process is almost entirely based on the use of recycled materials. For example, the shoe's upper is made from the leather scraps of former gardening gloves, its lining from ocean plastics, and its outsole from recycled car tires. The perforated toe section and subtle color accents on both the inside and outside provide a subtle retro appeal.