You and your baby can enjoy leak-proof, worry-free time in the water with the charlie banana reusable swim diaper & training pants. The trim-fitting pants wont swell, so your little one can splash and play without extra water weight holding her down. The soft, baby-friendly nylon and polyester materials meet cpsc standards. You can feel good knowing the diaper pants are not made with vinyl, oil, latex, chlorine, petroleum or pvc. Theyre reusable and easy to care for, too just machine wash and tumble dry after use. Standard sizes fit babies between 11 55 lbs.