[L J]

I used cotton prefolds with PUL covers on DD when she was newborn, up to about 3 months by which stage I'd built up more of a stash of fitteds.
I still use the prefolds now (she's 8 mths) if I'm behind on washing.
Cotton has the advantage over hemp and bamoo in reduced drying time and price. Bamboo and hemp have the advantage over cotton that they are more absorbant for the same bulk (or the same absorbancy for less bulk than cotton), and therefore more likely to be used as stuffers or boosters after baby outgrows the prefold.

HTH

Lou