Thermos 104932 Funtainer Straw Bottle, Blue, 355 ml

Product Information

We all have to drink water - six to eight glasses a day is recommended - but those of us fortunate enough to live in a developed country where a tap is always nearby have little excuse not to take the short stroll to the nearest one and fill our cup up, rather than tossing it aside to clog up landfill or a dolphin’s stomach. 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. How the materials affected a beverage's taste: We tried different beverages to see if the tumblers' materials affect taste, including plain water, juice, smoothies, and coffee.

Our Lab team consists of testers with decades of experience in both professional and home kitchens. In addition to their testing, tumblers were sent out to our food and commerce writers who cook and meal prep consistently. Our testing also didn’t end with simple temperature testing, as you’ve actually got to get your coffee there intact. We also tested durability by dropping these thermoses off our tailgates (and yes, sometimes running them over as well), and compared them in a leak test, where the thermoses were filled with hot water and laid on their sides over paper towels. All told, these thermoses have been shaken, rattled, and rolled to ensure they won’t be going anywhere but with you when you need them. A tumbler’s insulation should not deteriorate with prolonged use. “However if any insulated tumbler is damaged, thermals may be impacted,” states Nearn. Since our initial testing, YETI has now upgraded the Rambler Mug to include their MagSlider lid, a hot or cold liquid-ready lid that uses magnets to help seal in your drink. It still isn’t 100% leakproof, but now greatly increases its spill protection. And yes, YETI kept the price the same. We will urge a full cleaning to strip the rubber O-ring after each use however, as liquid likes to hide here, and frequent washings will keep this mug funk-free.Editor’s Note: We updated this guide on September 27, 2023, to add our new favorite most durable thermos, the Stanley Master Unbreakable, and averaged our temperature test findings with another year of data. The Best Thermoses of 2023-2024 These mugs are safe for the microwave if you need to heat or reheat a beverage, as well as the freezer, so you can, for example, freeze portions of fruit in each glass. Unlike some insulated glasses, they can be washed in the dishwasher, so cleaning is easy when the party is over.

Thermos’s patented vacuum insulation keeps liquids hot or cold for 24 hours, and the bottles are designed to keep the exterior temperature lower, making them easy to hold. This also prevents the bottle from sweating when holding cold liquids in the summer months. Compared to the top dogs in our temperature test, the Stainless King only came out 10 degrees shy of the top numbers — an impressive feat. The most popular size for the Contigo Travel Mug may seem small, but Contigo makes 16-, 20-, and 24-ounce size options. To further add to consumer design choices, Contigo gives you the option to have a handle, grip, or neither. We most appreciated the low profile of this mug when it came to commuting, where the Byron 2.0 slotted easily into any cup holder.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. True, it’s a tad heavier than some of its counterparts on the market at over 2 pounds, but there are numerous reasons Stanley has been used for generations. For one, the double-wall vacuum insulation has a time-worn groove of reliability, and in our testing was able to keep hot water at 157.5 degrees F after a full 24 hours — only 3 degrees shy of the top spot (also held by a Stanley). 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. There’s also more to using titanium than the space-age cool factor: When it comes to thermal efficiency, titanium has a lower temperature coefficient of resistance than stainless steel, meaning it keeps the warmth in your drink longer. Whether or not this is worth the high dollar amount will be up to you, but the tech is undeniable.

Determining your thermos capacity needs comes down to two factors: the intended activity and if you’re sharing.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. 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. This piece was updated by Derek Rose, the coffee and tea expert for The Spruce Eats. He researches a variety of coffee products, from measuring scoops to commercial espresso machines, and interviews field experts for their insight.

The only downside to this insulated bottle is it’s only meant for drinking cold beverages; it’s not designed for hot liquids. Because of the straw design, heat causes pressure that could make the bottle leak or spill. That didn’t stop us from testing it — but we did pop out the straw for our trial.Looking for something that’ll be used mostly for water? Take a look at our review of the best insulated water bottles. In the lab; (photo/Erika Courtney) Temperature Retention Test When a thermos is meant for drinking, the lid construction determines how easy it is not to spill on yourself with every sip. Silicone lids usually create a decent seal but can be challenging to drink from. Plastic lids with a sipping hole or straw are usually the go-to for most nontraditional thermos lids. Extra Features & Accessories Having a great water bottle has become an essential part of daily life! Whether you for hiking or somewhere else, you need a water bottle to carry on to keep the body hydrated. But the water bottle without a straw may be messy for you as an un-proper sip can give you some extra amount of water. In this blog, we will discuss the 6 best thermoses with straw that we have found after in-depth research. What are the advantages of a thermos with a straw? Personally, I've been finding myself refilling at least three times, regardless of if I've been at home, work or abroad. It's not leak proof Another aspect of the lid to consider is the seal and how you drink out of the thermos. If you have a food-specific thermos, consider how easy it is to pour from the opening as well.