Pocket nappies consist of a waterproof outer and usually a fleece inner. There’s an opening along the back of the nappy through which you can insert as much (or as little) absorbency as your baby needs. Usually the outer part is very quick drying. This allows for more inserts to be purchased and used while your other inserts are drying without waiting for the whole nappy to dry. They are not as simple to use as an All-In-One nappy as the inserts need removing before washing and then replacing before you can use it again, however lots of people love the versatility of pocket nappies and some people lay the boosters on top of the pocket.