Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Just about perfect

It keeps coffee hot all day. As a test I first pre-heated the thermos with boiled water (about 5 minutes) then filled it with 19 ounces of strong coffee and 7 ounces of milk (I let the milk sit at room temperature for about 15 minutes). 14 hours later when I finished it off the coffee was still warm enough to enjoy.It's attractive and seems sturdy, though I haven't yet dropped it in order to test this!