Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Travel Mug

This is the BEST mug I've found so far. It has a pretty good capacity, the seal doesn't leak at all and the mug fits most of the holders I've tried.I like the security of the screw on top, the metal liner, the mug's capacity, the sturdy metal outer container. It answers most of the needs I have.The only recommendation I can think of for this or any mug, is to change the metal lining to glass or a glass coating to help improve flavor (especially when coffee is in the mug for extended trips.) And maybe bump the capcity up to 20 ounces for those of us coffee addicts stuck for long periods in traffic. (Of course that brings up another issue and maybe 14 ounces is okay)