Many swim schools and public pools mandate a reusable swim diaper. Using disposable baby swimwear is a waste, in every senses of the term. They do not retain anything at all! Using a washable waterproof swim suit is the perfect solution and we have many different prints available to make your little one a fashion sensation at the pool or the beach. Charlie Banana® organic cotton lining reusable swim diaper & diaper cover have a outer layer that is waterproof and a soft organic cotton lining inside against your gentle baby skin. It makes a lovely diaper cover if you want to hide your disposable diaper. They make a colorful organic cotton underwear too. Ideal for swim lessons.