Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not sure...

My husband ordered one of these for me for Christmas so I could carry our newborn around and still get things done. Unfortunately, he ordered it used and the person never sent directions. So, I couldn't really figure out how to use it. I tried it a few times and my son seemed pretty squished in the "cradle" hold. He's only six weeks old. Also, because his weight hangs from one shoulder strap, it put strain on my back and made me feel physically unbalanced. I ended up having to order the "Snugli" by Evenflo and we all like that much better. It's a lot more comfortable. Perhaps I wasn't using the sling correctly....