the advantage over PUL is that it is breathable and allows some of the moisture to evaporate so bum stays drier.
So do you use sleepsuit or other clothes over the wrap? Doesn't the evaporating moisture just make the clothes damp?
I have got some fitted nappies but they are birth to potty and ridiculously bulky on my baby. I will try the wrap with the prefolds and see how it works and weather it works any better than the current system.