The microfleece I find rarely bunches, and definitely stays dry, it is the stuff they use in some nappies (BumGs and Magicalls both use suedecloth). The stuff at Spotlight is labelled 'Little Additions Microfleece'. If you can, get white, but if you cant best to avoid pink because it can disguise any issues your DD may have (not saying she will, but best to have a colour that it will show up on easily if she does). Mine are blue because there was only blue and pink when I went shopping. They don't need overlocking and should be cut to around 10cm x 30cm.