It's adjustable in both size and absorbency. Adjust the size as your baby grows. You can use it on most babies that range from 8-35 lbs (4-16 kgs). Stuff it with as little or as much absorbency as you need to get you through a quick trip to the store, a long car ride, or maybe even overnight.

All nappies come with 2 microfiber terry inserts. Included are a 3 layer small insert, and a 4 layer longer insert that is adjustable for the medium & large sizes. The small insert  can also be used as a doubler when extra absorbency is desired.

Or you can upgrade to a one sized bamboo insert.