All in one nappy with snaps: The inner side of the diaper is covered by a high quality stay-dry liner fabric to make your baby as comfortable as possible. Its snappable pocket opening with built-in expandable inserts always keep the insert(s) in place while allowing you to easily add extra insert(s) to provide adjustable absorbency. Moreover, the hemp/cotton insert keeps the diaper trim without sacrificing absorbent capacity. And the semi-attached open design helps you to save time and energy by shortening the drying time. One-Fits-All Diapers: The shell is made from a TPU (polyester interlock knit with a urethane laminate) which is waterproof. Adjustable to four different sizes.