HYDRAFLOW Capri - 20oz Tumbler with Straw - Triple Wall Vacuum Insulated Tumbler - Insulated Smoothie Cup - Stainless Steel Tumbler - Reusable Tumbler with Lid - (Powder Aqua)

Product Information

The Rambler used to come with a standard lid—one you could actually fit a straw through—just like all the other tumblers. Performance-wise, this double-walled stainless steel tumbler was on a par with our top picks: It was a top-five finalist in cold retention and able to keep coffee hot at 144 °F over 2.

Every 30 minutes for three hours, we measured the internal temperature with a digital probe thermometer. Some tumblers have additional, accessory lids, such as sliding, rotating, or flip covers for the opening, which create a splash-guard effect but are not leakproof.

As the tumbler is the ultimate car-travel vessel, either during commutes or on road trips, we concluded that three hours of retention for heat and four for cold was plenty. We’ve tried that lid on the larger version, and it’s great: secure, easy to remove and clean, and fitted with a flexible silicone mouthpiece to prevent soft-palate jabbing. It was a design that solved all sorts of issues—splashing, straw access—yet some testers said they hated flipping lids.

By hour four, the Corkcicle was the first to have its contents fully liquified, and the Coleman was on the verge. That was enough for us to bump it to runner-up status, but it’s still a great option, as 140 °F is comfortable to drink, according to the National Coffee Association. CamelBak KickBak Tumbler: The hot and cold retention was really good, but the two-sided flip lid on the CamelBak was polarizing. Most brands have taken this into account; however, small, unattached parts may not be simple to disassemble and reassemble (and may have a tendency to disappear).We picked vessels that were similar sizes, but the tumblers still had slight variations that would affect heat and cold retention. It doesn’t sound like much time, but that lets you brew your morning joe, dump it in your cup, sip it while you dress, get into traffic, and arrive at the office with your cup still piping hot. We walked the floors of the Outdoor Retailer Summer Market trade show, an annual event where hundreds of brands showcase their latest innovations, and picked up every tumbler on display—18 in total.

The stainless steel tumbler itself is very similar to our top pick, except for a slightly wider taper (it feels more like a pint glass) and a grippier color coating. The packaging tends to emphasize that this one or that one keeps drinks “four times colder” or “colder longer.

Since so much of what made one tumbler preferable over another in our evaluation had to do with how it felt in the hand, we decided to recommend the Rambler for those people (several were at our campfire dinner) who wouldn’t be caught dead holding anything less than a burly drinking vessel. After leaving 16 insulated tumblers full of Slurpee in the front seat of a hot sedan, we’re convinced that the 20-ounce Hydro Flask All Around Tumbler is the best for most people. Klean Kanteen has discontinued our runner-up pick (though you may still be able to find it for sale in places), and replaced it with the 16 oz Rise Tumbler. We chatted up a dozen (or more) people over dinner around a campfire, and they all agreed that the Hydro Flask was easier to hold and more visually pleasing than any of the other 16 models we looked at—and that really mattered to tumbler devotees.

The construction remains the same (double-walled stainless steel), and the tumbler still comes in eight powder-coat colors as well as three other sizes: 12 ounces, 16 ounces, and 28 ounces. Zoku 3-in-1 Stainless Steel Tumbler: Our testers were really affected by the rounded—perhaps voluptuous—shape of this tumbler. In 2022, we compared the new versions of our top two picks with the old versions to make sure they lived up to their predecessors.If you get any of the four colored tumblers, the coating feels more tactile than the Hydro Flask’s, like it’s been rubberized. Beyond style, Hydraflow champions eco-friendliness by promoting reusable practices and being BPA-free. That may seem overly dramatic, but after seeing other, straighter designs, our testers tended to set the Zoku aside.