These reusable swim diapers are made out of cloth are a logical, practical, and easy-to-use choice. Its job is not to contain pee, their main function is to contain poop solids, which is not fun for the other people at the pool. Because they are made with lightweight material, no absorbency, preventing the diaper from swelling up or sagging, and losing its ability to perform its intended function. Baby can move easily when learning to swim.