マーベル クラシックタンブラー

The flip lid seals tight enough that I tossed it in my work bag with zero leaks, and my coffee stayed hot for a solid three hours. The double-wall insulation really does the job, and it fits right in my car's cup holder.

Took this to a baseball game and the double-wall insulation kept my iced coffee cold through all nine innings, even in the sun. The straw lid clicks on securely and hasn't leaked a drop in my bag, which is more than I can say for past tumblers I've owned.

The flip lid seals tight enough that I tossed it in my bag without a second thought, and the double-wall insulation kept my iced tea cold through an entire afternoon of errands. Cupholder-friendly is no lie—it sat snug in my car’s holder the whole drive.