Hi,
I have not used my OS AIO BG on a newborn, just started using it (my stash has one of different brands as I did not know what I would like or would fit ds), when DS was 4.5 months old (about 6kg) - but would agree with everything that KatieRabbit said...I think it would be too bulky for a newborn esp a little one! Love the BG, BUT the AIO does take longer than everything elseo I have to dry, but it is more a prob for me as I'm only part time MCN and so have limited numbers overall.

One thing I would suggest is to get some cloth liners (eg bamboo velour) ones to protect the inside from poo stains - I use them on all my MCN - it makes getting the poo into the loo that much easier! I tried the flushable ones but found them too rough on ds backside, so had some made up (thanks maz).

Good luck with them - the BG AIO is so easy to use though, I do love it!
FG