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Took this to the office and my coffee was still hot four hours later, which never happens with my old tumbler. The lid seals tight enough that I can toss it in my bag without worrying.

Filled it with ice water before a hike and it was still cold hours later — the insulation actually works. The tumbler feels solid without being heavy, and it fits my car's cupholder fine.

Took this to the lake all day and my water was still cold by evening, which honestly surprised me. The insulation really holds up, and it fits my car cup holder without wobbling.