Stanley Quencher 40 oz
This tumbler sold because it holds enough water that you stop refilling every hour, and because the handle makes a 40-ounce cup less clumsy. Ice lasts. It is a desk-and-car cup more than a hiking bottle.
Measure your cup holder before you assume it fits. Many cars take the 30-ounce better than the 40. If you walk with a bottle in a bag, Owala’s lockable lid is less likely to weep.
Buy the size you will actually carry, not the color that is trending this month.
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