I do love 4th Gen and Butterfly. My ds is 3 1/2 and very long...don't know exactly but 95%-tile in height. He's fine in the Butterfly and 4th Gen. But the Ergo is a bit short on him. He can't take a nap in it. But if we go for long hikes in dead heat, it's kinda nice because he's less covered.
fwiw, dh doesn't know how to back carry by himself unless it's with the butterfly.
fwiw, dh doesn't know how to back carry by himself unless it's with the butterfly.







It's our go-to carrier when we drive somewhere, since I'm not a fast wrapper and hate dragging my babyhawk straps on the ground.