I have bought quite a few Bumgenius sized nappies in small and medium and spent quite a lot of money on them but I am really disappointed. They are cute and easy to put on and no major leaks so far but they are just not the right nappy for my daughter.
Size small: The leg opening is much too tight and the rise too small. She is around 11lb now and these nappies should last up to 16lb but they leave red marks on her. She is a chubby baby but average for her age.
Size medium: is still slightly to big as when I put it on her it leaked due to wrong fit as smaller size does not leak.
I also had one XS but these were leaking a lot and where too small when she was about 8-9lb and according to Cotton Babies it should last up to 12lb, do not know how that would happen.
In all I have spent loads of money for nappies, which I would be able to use just for couple of weeks. Real shame I did not go for Smartipants as they seem to fit much much better. I am not even able to try out other nappies as my budget will not allow me