"OS diapers are bulky on nebrwons I used prefolds/covers on my son until he was 3 months old then went on to OS pocket diapers. OS diapers don't cover a nebrwons skinny legs enough so the runny poop gets out that way. The great things about cloth diapers though is that even if you spend the extra money you can still resell them when you're not using them anymore! I sold most of my prefolds/covers that helped buy the majority of my pockets! Then saved a couple of prefolds to use to stuff my pockets!!"