DS is about 27lbs and we haven't carried him consistently in awhile. The last time we did he was at least 1-2lbs lighter than he is now. We where using a Moby (which I love!) and his legs turned really purple like the circulation was being cut off. I use a sling periodically for him while I cook and he gets fussy but I can't wear that long term because it kills my shoulders and back. We are wanting to go do some hinking soon and would like to take DS with us but having a hard time figuring out how. We've tried doing the back postion with the moby but really hard to get DS to hold still long enough for us to figure it out.