Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Product was of such poor quality

I thought this was the coolest thing, when I discovered it just before my baby was born. HOWEVER, after 2 weeks of using it, the numbers on the measuring tube wore completely off!!!! It also developed some brown crust in the bottom. It did come off, but who wants to clean one more thing when you have a brand new baby at home. It did warm bottles nicely though and fairly quickly. However, a plain old pot of hot water works wonderfully and doesn't cost a thing, and you don't have to measure!!!!