I am looking for a sleeping bag for a 2 year old who is tall for his age. If I get him a toddler bag it will be too short in a year. But the regular "kids" bags are 60 inches long! That is nearly long enough for me. Are there bags in the 48-50 inch range?

I am also considering making an insulated "sleep sack". He sleeps in a regular sleep sack now so he would feel right at home in one. It seems many kids scoot out the top of their bags. I was thinking a sleep sack (where straps on shoulders keep the sack on the kid) and a blanket would be better. If I buy a sleeping bag I am thinking of adding snap on shoulder straps. Part of the scooting out also may be because of the slippery material - perhaps the bottom inside of the sleeping bag should be fleece.

Any ideas?