Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nice cup, but it leaks. Lid impossible to clean.

My girlfriend (now wife) and I walk less than a mile to work in the morning and she has been struggling to find a coffee mug that would not leak. I've bought a couple, she has bought a couple, and she has a few gifts - in the end, they all leak. Either at the hole you drink from or between the screw-on top and the mug itself.This is how I tested:-heat up 8oz of coffee-poured into new, clean mug-screwed on top securely-turned upside down-wait a few seconds and drip, drip...-turned upright, opened and closed the "drink hole" a few times-turned upside down-wait a few seconds and drip, drip...Bottom line, this mug leaks. I bought it because it was not supposed to leak.I would avoid this if you want to be leak free.Update: 2/2/2013. The lid is nearly impossible to get clean. Q-tips and soapy water gets the job partially done, but there are still areas that cannot be reached for cleaning. A bacteria magnet. Dropping to 1 star.