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