Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Negative 4 Stars - do not recommend

Unfortunately this is not worthy to wear the Stanley name. It requires greater microwave time to heat the something as simple as chicken soup. Although I may screw the top on when the soup is still boiling inside, 4.5 hours later the soup is only lukewarm and the thermos has been stored in my office all day - not on a job site or in a cold truck. Don't think you can heat your food on the stove and then put it in this thermos after heating the thermos in the microwave with water because that doesn't work either. For all the bulk of it, it can't hold a standard 18.5oz soup, ie. Progresso. Instead of making my morning lunch prep easier and faster it made it harder and longer. I just bought the Stanley Outdoor Food Vacuum Jar 20oz - and am thrilled. It took me 5 min to bring my can of soup to a boil this morning - I poured it in the thermos and at noon it was still hot!