Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Peace of mind!

I love this thing. I was terrified (still am) of SIDS, but I can actually let my baby sleep now that I have this. I used to go in to check if she was breathing - now I can relax, because I can see the light blink every time she breathes. Now our little one is rolling all over the place, and often ends up facedown - I don't know what I'd do without this.