All in one's and All in Two's are exactly that. They are the Diaper and the Cover all into one/two pieces that are either sewn directly to it's cover or snaps to it's cover.

All in one's are the most common and are the quick and easy option much like Pocket diapers, much like pocket diapers , but you don't have to worry with inserts and stuffing the pockets.

For people who need no fuss at all this is the diaper for you. There are many kinds and varieties depending on the interior fabrics and color of the covers. These are the most expensive option for your diapering kits however if you get an all in one that covers multiple diaper sizing ( called a one size) diaper then you will be set till potty training.

Pros- As easy to put on as sposies.

Cons- More expensive, can have leaking issues, can have fit issues depending on shape of diaper and child.