航海家隨行杯（附透明翻蓋及吸管）

The insulation on this tumbler is fantastic—my iced coffee stayed cold for over six hours without watering down. The twist-on lid seals perfectly, no leaks at all, and the straw is a nice touch. So glad I grabbed this for my daily commute.

I was worried the flip lid might leak in my bag, but it's twisted on solid and hasn't spilled a drop after a week of commutes. The straws are a nice touch and the cup fits perfectly in my car's holder.

The double-wall insulation really works; my iced coffee stayed cold for a full morning meeting. The leak-proof flip lid seals tightly, which is a relief for tossing it in my work bag. And having an extra straw in the pack is a nice bonus.