Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Product!

I bought this thermos about 3 years ago. It's had on/off duty as an every day thermos during that time and its still holding up like a champ. It keeps my coffee piping hot for about 5 hours, and acceptably hot for about another 3.Make no mistake, if it isn't "Thermos" brand, it isn't the same!!!I'd totally buy this again. I'm actually in the market for another now (larger thermos) and I won't even look at anything that isn't "Thermos" brand.