Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Product sucks from Stanley

Most Stanley products that I have used have been reliable. This product has been a true disappointment. Even when preheated, my coffee does not remain hot and the lid leaks. No matter how many times you rescrew the lid, the threads on it dont seem to be compatible. Course, with the coffee losing heat, there is not a chance of getting burned, but the dribble down the chin look is no fun.