bumGenius 4.0 One Size Pocket DiapersbumGenius diapers are one size pocket cloth diapers that fit babies from 7 pounds all the way up to 35 pounds. They were designed with fit function and ease of use in mind. For the smallest setting of the diaper the front snaps down to make the diaper smaller. For the medium size the diaper is on the larger snap setting. For the large size the cloth diaper is used in its full size without any snap down settings. Pocket cloth diapers require absorbent material to be placed in the pocket of the diaper. Each bumGenius cloth diaper comes with an absorbent Cotton Babies One-Size insert and a newborn insert.FeaturesNEW! Generous sizing accommodates larger babies.NEW! 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