Firstly--congratulations on your upcoming baby!! :hug:
Secondly--have a look here. Cloth diapers aren't what they used to be. They can be extravagant and adorable, or simple and cheap. Either way, they're much better for the environment...and your pocket! Even if they're not for you, they're definitely interesting to read about.
And thirdly--soakers are cloth diaper covers. Lanolized wool is water-resistant, anti-bacterial, and breatheable. They can be used over disposables, too! I've knitted a few for a pregnant friend...they're a very quick and rewarding knit. And sooooo cute!!