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Finally a tumbler that actually keeps my iced coffee cold for hours without sweating all over my desk. The insulation is noticeably better than my old cup.

Left it in my car all day in the sun and my drink still had ice cubes by evening. The lid seals tight enough that it hasn't leaked in my bag once, which was my biggest worry with a tumbler this size.

Took this on a hike and the ice from that morning was still clinking around at dinner. The lid seals tight enough that it didn't leak a drop rolling around in my pack.