bumGenius 4.0 One-Size Cloth Diaper Features: Durable snap closures help keep diapers on older babies. Generous sizing accommodates larger babies. Easily replaceable elastic keeps your diapers fresh. 3x3 snap down design adjusts the sizing to fit small, medium and large sizes (approximately 7-35+ pounds). Trim, snug and comfortable stretchy tabs provide a custom fit. Waterproof insert stopper prevents leaking at the tummy. Diapers are bundled with two inserts: a newborn insert for newborns and a one-size insert for your older baby. Wide slot opening makes it easy to stuff and remove insert. Slot cover protects your baby from wetness. All bumGenius One-Size Cloth Diapers include a small, lightweight insert for newborns and a larger one-size insert for your growing baby. When your baby outgrows the newborn insert, it works as an overnight booster or as extra absorbency for heavy wetters. bumGenius One-Size Cloth Diapers feature our patent pending butterfly closure system to provide a comfortable, trim fit. This simple design makes cloth diapering as easy as using disposables. The familiar design makes bumGenius one-size cloth diapers perfect for care providers who might be resistant to cloth diapering (including daycares). bumGenius One-Size Cloth Diapers fit most babies from 7 to 35+ pounds. No more sorting by size or having to carry multiple diapers when going out. Three snap-downs on the front of the diaper allow you to easily adjust the size of the diaper as your baby grows. For newborns, fold down the insert stopper for an extra-small rise. Only the Best for Your Baby The soft, waterproof outer fabric keeps the diaper trim on your newborn and toddler. Soft, sueded inner fabric gently wicks moisture away from your baby's skin. Super stretchy, gentle leg and back elastic with rolled out casings keeps the yuk in and help to keep red marks away. Our unique covered slot opening keeps your baby protected from moisture.