would it be better to do it the other way around with the bamboo as the booster in the middle and just a flannie cover??
Doing it this way would reduce the bulk a great deal. What I have done is to have a layer of bamboo with a booster sewn to it sandwiched between the flanelette layers. Add an extra lay in booster of bamboo (2 or 3 layers and cover it with the flannel to match the nappy body) and you will have a great looking and absorbant nappy