Keeping the poo off your little roo! Rump•a•rooz® One Size Reusable Diapers are a revolutionary change to the face of cloth diapering today! Designed with simplicity, Rump•a•rooz® are as easy to use as a disposable diaper, but without all the chemicals, waste and high cost! It's no wonder these award-winning diapers are the diapers of choice for moms, dads, grandparents and babysitters.