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The Zak Designs Harmony is a 20 oz vacuum-insulated stainless steel travel tumbler with a slide lid and a wide carry handle. It keeps drinks hot or cold for hours, fits most car cup holders, and is dishwasher safe. The slide lid opens for sipping and closes to stop splashes, which suits commuters and desk drinkers. Against rival tumblers it is a straightforward, handle-equipped option rather than one with straws, lids with multiple settings or smart features. Owners rate it well overall, with the slide lid and handle among the things they like.
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Lowest price we've seen: $9.88 on Nov 14 at eBay; highest $11.49 on Nov 4. Tracked across 3 stores since Nov 4.
Owners rate the Harmony tumbler well overall. They like the slide lid, the handle and how it keeps drinks at temperature.
It is vacuum insulated to keep hot and cold drinks at the right temperature.
A slide lid gives easy access to your drink and helps prevent splashes on the go. A wide carry handle makes it comfortable to hold. The slim shape fits most car cup holders.
The tumbler is dishwasher safe.





