These super cute one-size swim diapers are specially lightweight for babies & toddlers! No extra diaper or insert needed. The very soft and smooth elastic around the waist and legs ensure your child can move freely in the water. Raf Raf swim diapers have a layer of soft fabric that is leakproof in case of accidents and a stretchy bathing costume fabric on the outside. Snap fastenings make it easy to pull the diapers on and take them off, even when wet! Rinse the diapers thoroughly in chlorine-free water after use. Machine washable.