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 fit most babies from 7 to 35+ pounds. 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. 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.