Product details • Sports shoe • Flat heel • Fastening: touch 'n' close Fabric content and care advice • Uppers: 63% leather, 26% polyurethane, 11% polyester • Lining: 100% polyester • Cushioning: 100% leather • Sole: 100% rubber • Leather from environmentally-certified tanneries. Leather Working Group (LWG) certification is an internationally recognised certification which assesses the environmental performance of tanneries (covering energy and water consumption, waste water, air emissions etc.)..