A 100% waterproof style as at home on water as they are on land! If a platypus wore flip-flops, he'd choose these. , DURABLE OUTER SOLE - our Gumtread recycled rubber outsoles are flexible, durable and provide a tyre-like grip for whatever terrain you might encounter. Biodegradable jute fibres reinforce and preserve the integrity of the rubber, so the adventure keeps on going year after year. , WATERPROOF SUPPORT - the woven construction of the Duckbill's recycled PET strap is designed for optimum support and comfort, so you never have to slow down. Whether you're beach-front or dock-side, the straps are waterproof and gentle on the skin, for non-slip security. , AMPHIBIOUS UPPER - by directing air and water flow under foot, the textured EVA top layer provides unrivalled grip for the sole, even when wet. Its flexibility and spring are the perfect addition to any water sport pursuit on ocean, river, lake, or pool. Suit up & splash out!