Experience the first cloth diaper loved by every-day people - like your babysitter, grandparents and even dad! The bum Genius one-size cloth diaper is the first cloth diaper to feature stretch-to-fit tabs (patent pending), making cloth diapering as easy and comfortable as using disposables. Each 4.0 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. 4.0 Features: Generous sizing accommodates larger babies. Easily replaceable elastic keeps your diapers fresh. One Size Fits All! 3x3 snap down design adjusts the sizing to fit small, medium and large sizes (approximately 7 to 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. One Size Fits All! bum Genius one-size cloth diapers fit babies from 7 to 35 pounds. No more sorting by size or having to carry multiple diapers when going out. Three by three snap-downs on the front of the diaper (patent pending) adjust the rise as your baby grows. For newborns, fold down the insert stopper for an extra-small rise. Highly Absorbent Every bum Genius one-size cloth diaper includes the highly acclaimed Cotton Babies Microfiber Insert. If you are using this diaper on a small newborn (under 10 pounds), we recommend purchasing microfiber diaper doublers to use until your baby is a little bit bigger. Available in a variety of colors perfect for any baby.