マーベル クラシックタンブラー

Took this to a baseball game and the double wall insulation kept my iced coffee icy for the whole nine innings, even in the sun. The straw lid is surprisingly sturdy and hasn’t leaked once in my bag.

The flip lid seals tight enough that I tossed it in my work bag sideways and nothing spilled, which is more than I can say for my old cup. Coffee stayed hot for a solid three hours during my morning meetings, and the double-wall really does its job. It fits in my car's cupholder without wobbling, so

I’ve been using this tumbler daily for two weeks now and the double wall insulation actually holds up—my coffee stays hot through a full morning of meetings. The straw lid clicks in securely, so no spills even when I toss it in my bag sideways.