航海家隨行杯（附透明翻蓋及吸管）

The flip lid seals so tightly I can toss it in my bag without a drop spilling, and having two straws ready to go is a nice bonus. It keeps my iced coffee cold for hours, which makes my morning commute much better.

Finally, a tumbler that actually keeps my coffee hot during the morning commute. The twist-on flip lid is totally leak-proof, which is a huge relief for my car's cupholder. The two included straws make it super easy to switch between hot and cold drinks.

The double wall keeps my coffee hot for a few hours, which is solid, but the flip lid isn’t as leak-proof as I hoped—a small drip escaped when it tipped over in my bag. The straws are handy, though the second one feels unnecessary since the first works fine. It’s a decent tumbler for the price, just