Ok I have a wife and two kids, both of the kids are under 5. The kids can’t pack a whole bunch of weight I have them taking there water. I was looking at sleeping bags for everyone but the kids are so short and it seams like a big waste of a sleeping bag, and space in my bag, and kids sacks are indoor use only. So I think I should just get a couple of blankets where we can all sleep together. This will save on space and at least share body heat. Is there good blanket for our BOB? It need to be able to remain compressed and retain its insulation. It gets cold here, at its worst maybe 4 below. But I would like it to not take up much space in my pack. Any suggestions?