Pocket diapers are made of two layers, an outer waterproof layer and an inner breathable layer. At the back end of the diaper there is an opening in which you can place absorbent inserts.

bumGenius 3.0 One Size Pocket Diapers	Happy Heinys One Size	Wahmies One Size Diaper	Thirsties Pocket AIO
Happy Heinys Prints	Baby Kangas One Size Pouch Diaper