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Owala SmoothSip Slider keeps drinks cold for 24 hours, and rival travel mugs trade blows
The Owala's triple-layer insulation is rated for six hot hours or 24 cold ones, so here is how other travel mugs measure up on heat, leaks and sipping.
Six hours hot, 24 hours cold
The Owala SmoothSip Slider keeps drinks cold for 24 hours, or hot for around six, and anyone who carries a drink all day is the person it is built for. [1] The claim rests on its triple-layer insulation. [1]
Six hours is a useful yardstick for hot drinks, because other mugs have been measured over the same span. [2]
How the rivals hold heat
The Fellow Carter Move is named the best overall travel mug in the testing. [2] In a six-hour hot-beverage retention test it fell only 44 degrees Fahrenheit. [2]
The Zojirushi SM-SA60BA dropped 36 degrees over six hours in the same kind of heat retention test. [2] That is a smaller drop than the Fellow's. [2]
Heated mugs and their limits
The Ember Tumbler 2 holds 16 ounces, fits in a car cupholder, and keeps beverages hot. [1] Its hottest setting is 145 degrees Fahrenheit. [1]
Ember claims a battery life of three-plus hours, but the reviewer saw the brew lose its steam after about two. [1] The new 16-ounce Ember Mug 3 costs $160 and comes with a sipping lid. [1]
The SmrtMugg Go is claimed to keep contents hot for up to 90 minutes using its battery. [2] It came apart in the drop test, destroying the lid and rendering the heating element useless. [2]
Leaks, lids and taste
The Fellow Carter Move is completely leakproof. [2] The Ember Tumbler 2 dripped when flipped upside down, even with the sipping lid's slider closed. [1]
BrüMate says its patented BevLock lid on the Strova is fully leakproof. [1] The Strova has a very small mouth opening, which makes it awkward to sip from. [1]
The Thermos Stainless King Tumbler has a sipping lip made of stainless steel. [3] The Created Co. Nomad Sip, with its ceramic interior, had smoother flavor without a metallic tang. [3]
What this means for you
If you want a drink to stay cold all day, the Owala's 24-hour cold rating is the figure to look at. [1] For hot drinks, compare the six-hour numbers: the Fellow lost 44 degrees and the Zojirushi lost 36. [2]
If you are considering a heated mug, check the battery claim against real use, since the Ember Tumbler 2 lost its steam after about two hours against a claim of three-plus. [1] Check the lid too, because the Ember Tumbler 2 dripped upside down and the SmrtMugg Go broke in a drop. [1][2]
Sources
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