Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Leaked from Day 1!

The tags on this mug said that it had a lifetime warranty against defects. I trusted that and threw the tags away. BIG MISTAKE! The first time I used this mug my coffee leaked and would get caught in between the pink cup and the clear plastic shell on the outside. It would just sit there at the bottom and make the outside of the cup get all steamy. I washed it once and it cracked all the way around the inside so the lid wouldn't screw on. I would've tried to return it without the tags but it's not even worth the exchange.