Re: Double gussets - just an illusion?!
I think it depends on the child's build whether it will help hold the prefold in place or not. They don't work as well for skinny legs, IMO, because they seem to provide extra bulk room in the diaper, and it always made our prefolds saggy and wierd unless the diapers were REALLY snug. I do think they contain messes better than covers without gussets, but it's not really double.