yeah after looking at the jet 12 I think i'll option for the jet 18. they have kelty youth sleeping bags but they're synthetic and currently I don't have a compression bag just the stuff sack. The jet 12 also doesn't appear to have a waist belt. My 5 yr old did carry his kelty bag in a large 4lb backpack (appx weight) along with the food bag we used for the trip. I really want something he can grow into and maybe work his way into carrying maybe a liter of water.