Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Really helpful

I am 528 months old and I am a very light sleeper. I also get really distracted by repetitive noises (people sniffing, coughing, clicking pens, etc) and concentrate on my tasks. This is a great little machine that helps with both issues. My son is 156 months old and has started sitting in my bedroom to do his homework so he can block out the distracting noises of our house, it's made a HUGE difference it helping him feel calm and focused. So much, in fact, we will be buying one for his room.