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 him 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. The eco-friendly pants are reusable and easy to care for, too just machine wash and tumble dry after use. Standard sizes fit babies between 11 55 lbs.