カレッジトレックタンブラー

The tapered bottom fits perfectly in my car's cup holder, which is such a relief after dealing with bulky tumblers that wobble everywhere. I've tossed it in my bag with the flip lid locked and not a single drop leaked during my commute.

I was skeptical about the flip lid staying shut in my bag, but it's been through a dozen commutes without a single leak. The double wall insulation keeps my coffee hot from my morning drive all the way through my first meeting, and the straws are a nice bonus for when I want something colder.

The flip lid really seals tight—I tossed this in my backpack on a bumpy bike ride and not a drop leaked. Double wall insulation kept my coffee hot for a solid three hours, and the two straws are a nice backup for when I misplace one.