Re: Does anyone really go birth to potty in one size?
Yes, BG Organics (I guess these are Elemental now?), but to be fair, my daughter was just under 9 lbs when born and potty trained at 21 months. I had a newborn stash though, so we didn't really start using the OS until around 6 weeks, but we could have.
GroVia fit birth to potty as well, but we stuffed them with tiny prefolds in the beginning instead of the inserts.
Facts still exist even if they are ignored." - Harvie Krumpet