--- title: "Owala SmoothSip Slider keeps drinks cold for 24 hours, and rival travel mugs trade blows" description: "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." url: https://tech.skoop.news/7-best-travel-mugs-2026-insulated-leakproof-and-self-heating-5f9c80/ published: 2026-11-02T04:14:06.767289-05:00 modified: 2026-11-02T04:14:06.767315-05:00 section: "Tech & Apps" publisher: "skoop.news" language: en keywords: ["Ember Tumbler", "Fellow Carter Move", "SmrtMugg Go", "Thermos Stainless King Tumbler", "Owala SmoothSip Slider", "Created Co", "Fahrenheit", "Strova", "BevLock"] hashtags: ["#EmberTumbler", "#FellowCarterMove", "#SmrtMuggGo", "#tech", "#ai"] image: https://thumb.wikimedia.org/wikipedia/commons/thumb/9/92/Fahrenheit_Roller_Coaster.jpg/1280px-Fahrenheit_Roller_Coaster.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=thumbnail --- # 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. Published 2026-11-02 · Updated 2026-11-02 · Tech & Apps, [skoop.news](https://skoop.news/) ## In brief - 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]](https://www.wired.com/story/the-best-travel-mugs/) - The Fellow Carter Move is named the best overall travel mug in the testing. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) - The Ember Tumbler 2 holds 16 ounces, fits in a car cupholder, and keeps beverages hot. [[1]](https://www.wired.com/story/the-best-travel-mugs/) ## 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]](https://www.wired.com/story/the-best-travel-mugs/) The claim rests on its triple-layer insulation. [[1]](https://www.wired.com/story/the-best-travel-mugs/) Six hours is a useful yardstick for hot drinks, because other mugs have been measured over the same span. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) ## How the rivals hold heat The Fellow Carter Move is named the best overall travel mug in the testing. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) In a six-hour hot-beverage retention test it fell only 44 degrees Fahrenheit. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) The Zojirushi SM-SA60BA dropped 36 degrees over six hours in the same kind of heat retention test. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) That is a smaller drop than the Fellow's. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) ## Heated mugs and their limits The Ember Tumbler 2 holds 16 ounces, fits in a car cupholder, and keeps beverages hot. [[1]](https://www.wired.com/story/the-best-travel-mugs/) Its hottest setting is 145 degrees Fahrenheit. [[1]](https://www.wired.com/story/the-best-travel-mugs/) Ember claims a battery life of three-plus hours, but the reviewer saw the brew lose its steam after about two. [[1]](https://www.wired.com/story/the-best-travel-mugs/) The new 16-ounce Ember Mug 3 costs $160 and comes with a sipping lid. [[1]](https://www.wired.com/story/the-best-travel-mugs/) The SmrtMugg Go is claimed to keep contents hot for up to 90 minutes using its battery. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) It came apart in the drop test, destroying the lid and rendering the heating element useless. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) ## Leaks, lids and taste The Fellow Carter Move is completely leakproof. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) The Ember Tumbler 2 dripped when flipped upside down, even with the sipping lid's slider closed. [[1]](https://www.wired.com/story/the-best-travel-mugs/) BrüMate says its patented BevLock lid on the Strova is fully leakproof. [[1]](https://www.wired.com/story/the-best-travel-mugs/) The Strova has a very small mouth opening, which makes it awkward to sip from. [[1]](https://www.wired.com/story/the-best-travel-mugs/) The Thermos Stainless King Tumbler has a sipping lip made of stainless steel. [[3]](https://www.cnet.com/home/kitchen-and-household/best-travel-coffee-mugs/) The Created Co. Nomad Sip, with its ceramic interior, had smoother flavor without a metallic tang. [[3]](https://www.cnet.com/home/kitchen-and-household/best-travel-coffee-mugs/) ## 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]](https://www.wired.com/story/the-best-travel-mugs/) For hot drinks, compare the six-hour numbers: the Fellow lost 44 degrees and the Zojirushi lost 36. [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) 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]](https://www.wired.com/story/the-best-travel-mugs/) Check the lid too, because the Ember Tumbler 2 dripped upside down and the SmrtMugg Go broke in a drop. [[1]](https://www.wired.com/story/the-best-travel-mugs/) [[2]](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) ## Sources 1. [7 Best Travel Mugs (2026): Insulated, Leakproof, and Self-Heating](https://www.wired.com/story/the-best-travel-mugs/) — Wired 2. [Tested: Best Travel Mugs for Road Trips and Commuting](https://www.caranddriver.com/car-accessories/g69236307/best-travel-mugs-tested/) — Car and Driver 3. [5 Best Travel Coffee Mugs of 2025. I Tested 15 for Leaks and Heat Retention](https://www.cnet.com/home/kitchen-and-household/best-travel-coffee-mugs/) — Yahoo Image: Photo: Michael Gray / Wikimedia Commons, CC BY-SA 2.0 (https://commons.wikimedia.org/wiki/File:Fahrenheit_Roller_Coaster.jpg) --- Written from the sources above and checked twice (rules and an independent model) before publishing. How we work: https://skoop.news/how-we-work/ · Corrections: https://skoop.news/corrections/