Instruct: Classify an Amazon review as either positive or negative.
Query: Keeps coffee HOT

Fantastic product. Well designed for use & cleaning. Does not drip. Most importantly it really keeps coffee and beverages HOT! We use a french press for coffee & immediately transfer to this carafe. It keeps it very hot for 4-5 hours & very warm for 12 hours! The vacuum seal seems to be the secret! Amazing! Highly recommend!