Prince trainers have the lowest carbon footprint on the market. They are made of Ecoalf recycled Polyester sea yarn which comes from the ECOALF Foundations Upcycling The Oceans project, through which more than 4,000 fishermen across the Mediterranean Sea have collected more than 1,000 tons of waste since 2015. In addition, the sole contains 20% recycled Rubber. * Main fabric: 100% Recycled polyester * Sole: 80% Rubber / 20% Recycled rubber * Laces: 100% Polyester * Lining: 50% Recycled polyester / 50% Polyester * GRS Certification * No metal components * Water-repellent * PFC-free * Vegan