Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tepid coffee

I've tried every tip in the book with this vacuum bottle. My coffee will NOT stay hot. After a short drive to work, it's only warm. Outside of bottle feels warm, so heat is escaping. This is the second Stanley I've had and I am really not happy with Stanley products. Am I just unlucky enough to get TWO bad bottles? Stupid me for deciding to give it another try. I'm taking it back to the store.Why does everyone else have piping hot coffee with these things? I'd give it NO stars if I could.Argh.