These one‐size cloth diaper covers from BumGenius are compatible with three insert types and allow for a customized fit. They make cloth diapering on the go as simple as one, two, three! Tuck in flaps for tucking in pad folded prefold or flat, if desired. This cover is known for it's great fit over a very broad size range. It is an excellent choice over trifolded prefolds and it also fits well over the Workhorse diapers, too. A waterproof shell, so no extra cover is needed. Wipe the inside of the cover out and use it over and over again!