Carter Wide Lock

The lid snaps on with a reassuring click and hasn’t leaked once in my bag, even when tossed sideways. Six hours later, my coffee’s still steaming, which is honestly better than my old thermos ever managed.

My daily latte stays hot through the entire morning now, and I've stopped worrying about accidental spills at my desk. The six-hour heat retention is genuinely impressive, and the lid clicks on securely every time.

Fits the Carter Wide Mug perfectly and snaps on with a satisfying click. I've knocked it over twice already and not a single drop spilled, plus my tea stayed steaming for hours.