I used the hip hammock with my dd from 7 months until about 13 months. My babywearing experiences prior to that had been a plain ol' sling and the Baby Bjorn. I much preferred the hip hammock, though I still had shoulder pain from it. But I still recommend it for those babes that really need to be carried on the hip. And, the creator of the hip hammock, Nancie Swanke, is super nice, too (I had an e-mail conversation with her awhile back).