I used Baby Beehinds Bamboo OSFA with the boosters in my heavy wetting new born. I started using them on her at about 6 weeks as I was still getting the hang of everything and didn't want to add the cloth nappies into the mix in the early, early days so i'm not sure on fit for a new - new born. I also found the wool outers good overnight when DD was really little, because at that age you're still changing them overnight and they seemed to keep her bum drier.

Good luck.