The Close Parent Pop-In nappies have the extra protection round the legs, of the little elasticated leg-gusset (like disposables do) to stop anything leaking out - I find this really good, and with quite a few of my 'normal/non-gusseted' nappies, when my LO poos, it just spreads out and shows round the legs. (eg: my Blueberry nappies: the 'pocket' fabric shows round the legs, so when he poos it too shows round the legs, and so gets on his clothes!!)
I just wondered if I'm missing something: why aren't the elasticated leg gussets the norm, they seem such a good idea!?
Here's a link with the leg-gussets incase I've not explained very well!! http://www.closeparent.com/Default.aspx?tabid=148