All-in-two

All-in-twos, also called snap-in-ones, consist of a lined waterproof outer layer and absorbent inner layers, which 'snap in' with press studs. They can be taken apart for laundering, so they dry faster than all-in-ones.

Source: wiktionary

Another very popular option amongst cloth diapering families are all-in-ones (AIOs) and all-in-twos (AI2s). These diapers are similar to pocket diapers, only AIOs have the insert sewn into them, and AI2s have inserts that snap into place in the shell.

Source: wiktionary

Pocket diapers are my favorite because they're a little easier to use than fitteds, flats, and prefolds, and they're cheaper than all-in-twos and all-in-ones.

Source: wiktionary