Biscuits Chilly's 環保隨行杯

The lid seals tight enough that I can toss it in my bag without worrying about leaks. My tea stayed properly hot through a four-hour shift, though by hour five it was just lukewarm rather than the six hours promised.

Keeps my coffee warm for a couple hours on the train, though the six-hour claim feels optimistic. The lid seals tight and hasn't leaked in my bag.