My DD is 12 weeks and she has inherited a few gro bag thingies but I think they are too light and so end up using a swaddle blanket and another blanket on top- which kind of defeats the whole object of the gro bag. So I was wondering if anyone knows of any kind of duvet type things that can be wrapped around the babies. I know gro bags can have detachable sleeves but I was thinking something more duvet like than grobag like. But obviously something that won't budge. Does any of this even make any sense?!