Flat Diapers are the original cloth diaper. A large sheet of absorbent cotton, a Flat can be folded to whatever size you need. They require a waterproof cover, and depending on how you fold the diaper, a fastener to secure.
Pros: total economy, no need to buy multiple sizes, natural fibers, great diaper for those who will hand wash
Cons: requires separate cover, highest learning curve, requires cover or fasteners to hold in place
