Like the amphibious Duckbill Platypus, this flip flop is at home on land or in water. The Duckbill has a textured EVA top layer which helps direct air flow and the movement of water under foot providing grip even when wet. The woven rPET straps provide plenty of support and are 100% waterproof making the Duckbill ideal for any amphibious adventures! All Gumbies flip flops and sandals feature their signature recycled rubber Gumtread™ outsole which is contoured to the shape of the foot for comfort with tire-like tread for grip and durability.