クラシックタンブラー用交換ストロー蓋

The flip lid seals tight enough that I tossed the tumbler in my bag with coffee and nothing leaked. The twist-on fit feels more secure than the original lid I replaced.

The straw lid twists on snug and the double-wall insulation actually keeps my drink cold for hours without any condensation on the outside. I've knocked it over twice already and not a single drop leaked, which is a huge win for my desk setup.

The flip lid snaps shut with a satisfying click, and I’ve tossed this in my bag multiple times without a single drop escaping. It twists on securely, so I’m not worried about it popping off mid-sip. Even the straw opening stays sealed until you flip it up, which is exactly what I needed for my commu