It seems I've read something somewhere long ago that dead space in a sleeping bag is bad, that it won't warm up well enough. My daughter thinks she is a clock hand and wiggles all night long so I doubt folding the foot would work well, which is why I wondered about folding down the top. However we like to tighten the mummy hood to keep her head in there too.

Maybe a large rubber band?
_________________________
Bob


"Were I to leave where else would I go? Your words of life and of truth You hold." - Third Day