I picked up two RaR OS covers to use with cloth inserts (not fully wrapped prefolds) on DD1 and they don't seem to lay flat very well in front. They even seem a little saggy overall (except in the leg gussets).
Haven't had any leak issues, but the elastic in front causes the top to sort of fold under and the edge of the Velcro strip rubs against her tummy.
Am I doing something wrong or is it just how RaRs fit when they aren't used with a full prefold? They got really good reviews so I was surprised to see such a strange fit.
I'm hoping they work a little better on DD2 when she arrives and grows into them.
ETA: forgot to mention, she's ~28lbs, so just over the edge into the largest rise setting.
Re: Rumparooz OS fit
I agree with SAK. Duo wraps are two sized, not one sized.