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Vacuum-insulated cups, which are typically made of metal or glass, have both an inner and outer wall that is separated by a thin layer of vacuum. The outer walls have a reflective coating to keep heat inside the inner chambers; meanwhile, convention (how heat rises and cold sinks — causing the loss of heat) is prevented by the cup’s lid.
A tumbler’s insulation should not deteriorate with prolonged use. “However if any insulated tumbler is damaged, thermals may be impacted,” states Nearn. Erika Owen is a big fan of super cold water. A simple water bottle doesn't pass the temperature test. She's been testing insulated tumblers for years and is constantly searching for the perfect travel-friendly option that doesn't eat up (too much) precious carry-on space. Yes, it's true, Yeti has been great from the beginning, and now that you know where it comes from (so to speak), let's talk a little bit about the pros and cons of owning one. Most of the time you can't go wrong, but it's nice to know the perks and the downsides just the same. Pros
We love the flat siding, as it makes it way easier to grip, especially when by the pool or grill. This cup also comes with a spill-resistant lid that features a slide closure and a removable silicone gasket to make cleaning easier. Per the manufacturer’s recommendations, this wine cup must be hand-washed. Vacuum-insulated tumblers or bottles feature a double wall, or two-layer construction—oftentimes made of stainless steel,” says Graham Nearn, Stanley’s Vice President of Product Creation and Design. “All air is removed from between the two layers of the bottle to create a vacuum.” This feature is why this kind of tumbler is able to keep beverages at the preferred temperature for an extended period of time. It’s vacuum insulated, double-walled and made from the highest quality 18/8 stainless steel. To me, it feels strong, robust and well made.
We love that the BEAST actually lives up to the hype and does what it says it will. If I put icy water mixed with lemon for flavor in my tumbler, the ice is still found 8 hours later! How easy it was to clean each tumbler: We washed each tumbler according to the manufacturer's instruction and noted how difficult or easy it was—as well as whether any special tools like bottle brushes were required. After testing, the tumblers with stronger beverages like coffee, we noted if there were any lingering aromas. How comfortable each tumbler was to hold: We held each tumbler in hand and noted any design features that enhanced comfort or functionality. For example, tumblers with handles or textured surfaces helped provide additional grip. Naturally, you probably want to know all the important details about both tumblers so you can decide which one fits your needs and preferences. Read on to learn what these tumblers have in common, their pros and cons, and much more! The Yeti: Pros, Cons, and the OriginsIf you want something better than a budget-priced tumbler, there’s no way to beat the original YETI – Rambler. YETI didn’t technically invent this category of drinkware (similar insulated travel mugs have been around for a very long time), but they created a new market with big 30-ounce tumblers targeted at outdoor enthusiasts who loved their coolers for camping and tailgating. There are also two sizes to suit your needs and budget – 30 oz (as featured on the video) and the 20 oz BEAST Tumbler (pictured below) 5. Keeps Your Hot Drinks Hot and Your Cold Drinks Cold – Even Overnight! The best strawed tumbler we've tested, with a bendy-top, well-sealed straw and removable components for easy cleaning Now that you know some pros and cons, let's talk about what Beast and Yeti tumblers have in common. For starters, the pricing is typically the same; Yeti and Beast tumblers have a variety of sizes ranging up to 32 ounces. We were only able to fit this tumbler in the extra-large cupholder. Our testers were very impressed with its leakproofness (it didn't leak when held upside down or shaken)—suitable for consuming beer. And they weren't impressed with its ability to insulate heat—also suitable for consuming beer. Our testers did say the separately sold handle would be a bonus. "The Beast was a little large in my hand, and while it was easy to grip the external material, it could benefit from a handle," one tester noted. "But a great value considering the capacity and its stellar performance preventing leaks."
Stainless steel is the standard for insulated mugs since it’s easy to clean, doesn’t cling to odors, and has fantastic temperature control compared to other materials like plastic. If you’re looking for something that keeps your drinks well-insulated, this model boasts double-wall insulation that keeps your drink’s temperature no matter what the outside weather. This 20-ounce tumbler stands 6.88 inches high and has a 3.5-inch diameter that fits most standard-size cupholders. The price of this tumbler is high, and it doesn’t keep your drink any hotter or colder than others. Additionally, while the lid is easy to clean and stays on the cup pretty well, it is not spillproof. An owner of both a Yeti and Beast tumbler tried tipping the cups upside down while full of water with the lids shut. The Beast did not leak at all, while the Yeti did let a few drizzles of water go. This doesn't take away from its credibility, but it is just a little bit of a downer.
Our testers liked the insulating capability of this tumbler and that there was no metallic taste in the water during testing. One tester noted they'd like to see this model be a bit taller and thinner and with a cover to close the lid's drinking hole. "This wine tumbler style isn't something I'd recommend to a friend, although the quality of this one is good," concluded another tester. "If you like wine-style tumblers, this one is the one to buy." This model kept our drinks toasty or cool while limiting chances of spilling, and all for a lot less than most of the competition Hydro Flask’s tumbler cup does a great job on all fronts with its TempShield double-wall vacuum insulation. It can keep hot beverages warm for up to six hours with the lid and keeps beverages cold for up to 24 hours, something reviewers rave about. The design also prevents the tumbler from sweating, so there's no worrying about getting rings on your furniture. Spout stoppers: Flip-up stoppers and slide-over stoppers are the two common approaches to keeping a tumbler closed. Look closely at what you’re buying, though: Many tumblers are made with a few different lid styles if you look for them. This flip-up lid stopper is the only option we found that really prevents leaks, though it’s still not safe to put in a bag.
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