Instruct: Classify the given review into positive or negative sentiment.
Query: Best

I got one because my husband had one and raved about it. I had an iced drink in it that i left over the weekend at work. No ice on Monday, but it was still cold. Right now i'm using it for iced drinks and it keeps ice chunks in it all day. Husband uses it for coffee and drink is still hot when he gets home (not burning hot, but not that tepid bleh flavor when coffee is in the cup too long). Well worth the money!!