Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ouch my back and shoulders

We recieved the baby Bjorn as a gift and were excited to try it out. It wasn't so horrible when my son was first born, but as he gained weight both my partner and I found that the bjorn caused excruciating back pain really quickly. We both attribute this to the fact that it has NO lumbar support. I looked online and found out that Bjorn has recently made a carrier WITH a lumbar support. If you are going to buy a Bjorn I would highly recommend spending the extra money.My other concern with the Bjorn is that my son seemed to be to big for it by the time he reached 16 pounds. Just too tall.The thing I like about the Bjorn is that baby can face in or face out. This is great for when they are able to hold up their own head.As for me, I found that something like the moby wrap, which is a long piece of fabric you wrap around yourself, gave me great lumbar support for a fraction of the price of a bjorn. The downside, my partner won't wear it because it is too girlie.