Designer Bums Award Winning Reusable Swim Nappies are a made from premium PUL for extra assurance and comfort during water play. Featuring our signature hand-illustrated Artist designs that are exclusive to Designer Bums. Rise snaps on the front make this OSFM (One Size Fits Most) Swim Nappy a great option for babies through to toddler. The double elastic gusset provides an excellent seal for extra protection to contain any 'number 2' accidents in the water.