MATERIALS UPPER Corn vegan napa: cotton 29% + polyurethane 71% with 68% bio-based mass content. Reflective nappa: 74% PU + 19% GL + 7% PL + 4% CO. LINING Seaqual yarn: contains approximately 10% upcycled marine plastic + 90% post-consumer plastic from land sources. Upcycled marine plastic is made from marine litter retrieved from our oceans, beaches, rivers, and estuaries. INSOLE 93% recycled polyurethane + 7% binder agents. OUTSOLE 48% synthetic rubber + 10% natural rubber + 21% fillers + 21% additives. LACES 100% certified organic cotton. PRODUCT CARE Not waterproof product. Use a damp cloth to clean your sneakers. We don't recommend washing your SAYE in the washing machine. If you still do so, we are excluded from any liability.