Synthetic metallic leather upper strap Contoured high rebound Soft Top Foam footbed with arch support featuring 20% BLOOMâ„¢ foam made from repurposed algae which helps improve water and air quality. Happy U tread sponge rubber outsole made with 53% recycled material 1.25"" platform height Sustainability Initiative(s): BLOOMâ„¢ Foam Water-friendly