Stanley's Sturdy Vacuum Growler Is Built to Keep Drinks Cold and Carbonated All Day Long

Stanley
Stanley

With new breweries popping up on seemingly every block over the past decade, growlers have become the best way to bring fresh draught beer to parties, movie nights, and beach trips. But the typical glass models provided by most brewpubs aren’t meant to keep your beer cold for long, so if you have to travel a few hours to your friend’s barbecue, you run the risk of showing up with a flat, lukewarm IPA. This has created a need for a better, insulated growler that can keep beer—or anything else—colder for longer.

Stanley, the company that perfected the art of keeping drinks cold (or hot) for days on end, has a solution in the form of their double-wall insulated Easy-Pour Growler. Holding 64 ounces of liquid, this growler is built tough. It’s not necessarily heavy, but the construction is strong enough that you won’t have to worry about simple drops or cracks getting the best of it. The handle is securely bolted onto its stainless-steel body, and the lid has a latch that closes it up tight to keep excess air out. It's also dishwasher-safe, so you won't have to figure out how to scrub stout residue from the sides and bottom.

How the Stanley Growler handles cold drinks

In terms of function, the box says that the growler should keep drinks cold for up to 24 hours—but depending on your circumstances, it can go well beyond that. When I filled the growler with chilled water, it kept it cold for over a day and a half in my 72°F apartment; meanwhile, a glass of ice water sitting right next to it was tepid within hours.

After that, I left a growler full of cold soda outside from 9:00 a.m. to 5:00 p.m. during an 85°F day—when I poured a glass after work, the drink felt like it had just come from the fridge. With a lid that closes tight to prevent leaks, it’s easy to imagine slipping this growler into a backpack for daylong hikes or beach trips.

Stanley growler.
The Stanley Easy-Pour Growler is available in green, navy, and black.
Stanley

But do the drinks stay carbonated?

A growler is not much of a growler if it can’t hold carbonation—but as long as you’re not opening and closing the lid ad nauseam, the Stanley does the trick. I tested it with a liter of Coke Zero (breweries aren’t allowing you to fill your own growlers at the moment), and after I let it sit in the covered growler for an hour, the first glass I poured was as foamy as something right out of a fountain machine.

Subsequent pours over the next few hours saw some flattening, but there was still plenty of life in each glass. If you’re looking to hold onto carbonation, the key is to fill the growler to the top to avoid getting too much air in it. And as if to provide audible proof that it’s working, you’ll hear a very noticeable pop when you open the vacuum lid with a carbonated drink inside.

The Stanley Growler can also handle the heat

The most surprising part of the Stanley growler is actually how well it works with hot beverages. I filled mine with boiling water at 8:00 a.m. before work on a Monday and clocked the temperature at 200°F. I re-checked the temperature every few hours and found that it would lose around 5 degrees every hour or so. By the next morning at 8:00 a.m., it still registered around 125°F, with noticeable steam wafting out every time I opened it. And because of its double-wall insulation, it was never hot to the touch.

Now, no one is going to drink anything that’s 200°F, but if you fill the growler with non-scalding coffee, it should definitely keep it nice and hot for the 18 hours the company claims (just don’t keep opening and closing the lid every hour or you’ll probably lose some of that heat faster.)

You can buy the Easy-Pour Growler on its own from Stanley’s website ($55) and Amazon ($55). It also comes in a gift set ($80), complete with four stainless-steel tumblers, which keep drinks hot or cold for up to 30 minutes and have built-in koozies around the body so your hands won’t feel a thing.

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10 Products for a Better Night's Sleep

Amazon/Comfort Spaces
Amazon/Comfort Spaces

Getting a full eight hours of sleep can be tough these days. If you’re having trouble catching enough Zzzs, consider giving these highly rated and recommended products a try.

1. Everlasting Comfort Pure Memory Foam Knee Pillow; $25

Everlasting Comfort Knee Pillow
Everlasting Comfort/Amazon

For side sleepers, keeping the spine, hips, and legs aligned is key to a good night’s rest—and a pain-free morning after. Everlasting Comfort’s memory foam knee pillow is ergonomically designed to fit between the knees or thighs to ensure proper alignment. One simple but game-changing feature is the removable strap, which you can fasten around one leg; this keeps the pillow in place even as you roll at night, meaning you don’t have to wake up to adjust it (or pick it up from your floor). Reviewers call the pillow “life-changing” and “the best knee pillow I’ve found.” Plus, it comes with two pairs of ear plugs.

Buy it: Amazon

2. Letsfit White Noise Machine; $21

Letsfit White Noise Machine
Letsfit/Amazon

White noise machines: They’re not just for babies! This Letsfit model—which is rated 4.7 out of five with nearly 3500 reviews—has 14 potential sleep soundtracks, including three white noise tracks, to better block out everything from sirens to birds that chirp enthusiastically at dawn (although there’s also a birds track, if that’s your thing). It also has a timer function and a night light.

Buy it: Amazon

3. ECLIPSE Blackout Curtains; $16

Eclipse Black Out Curtains
Eclipse/Amazon

According to the National Sleep Foundation, too much light in a room when you’re trying to snooze is a recipe for sleep disaster. These understated polyester curtains from ECLIPSE block 99 percent of light and reduce noise—plus, they’ll help you save on energy costs. "Our neighbor leaves their backyard light on all night with what I can only guess is the same kind of bulb they use on a train headlight. It shines across their yard, through ours, straight at our bedroom window," one Amazon reviewer who purchased the curtains in black wrote. "These drapes block the light completely."

Buy it: Amazon

4. JALL Wake Up Light Sunrise Alarm Clock; $38

JALL Wake Up Light Sunrise Alarm Clock
JALL/Amazon

Being jarred awake by a blaring alarm clock can set the wrong mood for the rest of your day. Wake up in a more pleasant way with this clock, which gradually lights up between 10 percent and 100 percent in the 30 minutes before your alarm. You can choose between seven different colors and several natural sounds as well as a regular alarm beep, but why would you ever use that? “Since getting this clock my sleep has been much better,” one reviewer reported. “I wake up not feeling tired but refreshed.”

Buy it: Amazon

5. Philips SmartSleep Wake-Up Light; $200

Philips SmartSleep Wake-Up Light
Philips/Amazon

If you’re looking for an alarm clock with even more features, Philips’s SmartSleep Wake-Up Light is smartphone-enabled and equipped with an AmbiTrack sensor, which tracks things like bedroom temperature, humidity, and light levels, then gives recommendations for how you can get a better night’s rest.

Buy it: Amazon

6. Slumber Cloud Stratus Sheet Set; $159

Stratus sheets from Slumber Cloud.
Slumber Cloud

Being too hot or too cold can kill a good night’s sleep. The Good Housekeeping Institute rated these sheets—which are made with Outlast fibers engineered by NASA—as 2020’s best temperature-regulating sheets.

Buy it: SlumberCloud

7. Comfort Space Coolmax Sheet Set; $29-$40

Comfort Spaces Coolmax Sheets
Comfort Spaces/Amazon

If $159 sheets are out of your price range, the GHI recommends these sheets from Comfort Spaces, which are made with moisture-wicking Coolmax microfiber. Depending on the size you need, they range in price from $29 to $40.

Buy it: Amazon

8. Coop Home Goods Eden Memory Foam Pillow; $80

Coop Eden Pillow
Coop Home Goods/Amazon

This pillow—which has a 4.5-star rating on Amazon—is filled with memory foam scraps and microfiber, and comes with an extra half-pound of fill so you can add, or subtract, the amount in the pillow for ultimate comfort. As a bonus, the pillows are hypoallergenic, mite-resistant, and washable.

Buy it: Amazon

9. Baloo Weighted Blanket; $149-$169

Baloo Weighted Blanket
Baloo/Amazon

Though the science is still out on weighted blankets, some people swear by them. Wirecutter named this Baloo blanket the best, not in small part because, unlike many weighted blankets, it’s machine-washable and -dryable. It’s currently available in 12-pound ($149) twin size and 20-pound ($169) queen size. It’s rated 4.7 out of five stars on Amazon, with one reviewer reporting that “when it's spread out over you it just feels like a comfy, snuggly hug for your whole body … I've found it super relaxing for falling asleep the last few nights, and it looks nice on the end of the bed, too.” 

Buy it: Amazon 

10. Philips Smartsleep Snoring Relief Band; $200

Philips SmartSleep Snoring Relief Band
Philips/Amazon

Few things can disturb your slumber—and that of the ones you love—like loudly sawing logs. Philips’s Smartsleep Snoring Relief Band is designed for people who snore when they’re sleeping on their backs, and according to the company, 86 percent of people who used the band reported reduced snoring after a month. The device wraps around the torso and is equipped with a sensor that delivers vibrations if it detects you moving to sleep on your back; those vibrations stop when you roll onto your side. The next day, you can see how many hours you spent in bed, how many of those hours you spent on your back, and your response rate to the vibrations. The sensor has an algorithm that notes your response rate and tweaks the intensity of vibrations based on that. “This device works exactly as advertised,” one Amazon reviewer wrote. “I’d say it’s perfect.”

Buy it: Amazon

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This Insulated Growler Keg Lets You Pour Carbonated Beer, Soda, and Cocktails on the Go

GrowlerWerks
GrowlerWerks

The biggest hurdle for taking draft beer on the go is keeping it cold and carbonated once you leave the brewery. And while insulated travel growlers help keep drinks fresh for longer, traditional glass growlers start losing carbonation once they're opened.

Portland-based GrowlerWerks combats the scourge of flat ales with a line of growler kegs featuring built-in tap handles that mimic a brewery-fresh pour. And with the company's lightweight and affordable uKeg Go ($99) model, GrowlerWerks is making sure your sudsy drink of choice can survive all-day cookouts, lazy nights on the patio, or a week in the fridge.

How is the uKeg Go different from a growler?

The main selling point of the 64-ounce uKeg Go is its tap, which dispenses beer just like you'd be served at a brewery. But it’s not as simple as just filling it up and playing bartender—you’ll first need to install an 8g CO2 cartridge before you even pour your first pint. Much like an actual keg, the CO2 is what’ll actually keep your drink nice and foamy after you've filled the growler. (GrowlerWerks sells its own CO2 charges separately at $12 for a pack of 10. Each cartridge should last for the entire 64 ounces.)

The cartridge itself pops right into a sleeve, which you then screw into the bottom of the cap. Once you've tightly secured the cap onto the growler, you can choose your carbonation setting—first position for beer and cider and the second position for soda and cocktails—and start pouring.

Though the system isn’t complex, you’ll definitely want to give the instructions a once-over before you first use it—I wound up wasting my first CO2 cartridge because I didn’t have the cap in the “off” position when I first installed it, resulting in it emptying out before I could even screw it on.

So, does it work?

My first drink—Coke, because my local breweries still aren’t allowing private growler fills due to COVID-19—came out perfectly chilled and fizzy, as if it had just been poured from a fountain. But time is the enemy of all carbonated beverages, so over the next eight hours I poured a few more glasses to see how both the CO2 and the temperature held up.

I found that there was very little difference between that first cold glass at 8:00 a.m. and that final one at 5:00 p.m. The drink suffered virtually no temperature change, thanks to the uKeg Go’s double-wall vacuum insulation, and never lost any of that bubbly character. Even when the keg was left out in the sun from noon to 5:00 p.m., the soda remained unaffected.

GrowlerWerks uKeg Go
GrowlerWerks

Because we're talking about a keg here, I knew I had to test out beer as best I could, so I transferred a few cans to the uKeg, and the result was pretty much the same—the growler maintained the beer’s temperature and carbonation level all day long, resulting in a consistent pour that never lost flavor or crispness. It’s basically indistinguishable from having beer straight from a brewery tap, and it'll probably be my go-to travel vessel anytime I bring local beer on the go.

While these tests simulated bringing the uKeg to an all-day event, the company claims the growler would be able to maintain the carbonation for up to two weeks.

How's the build?

The whole idea behind the uKeg Go is portability—it's meant to travel with you wherever you go, from a backyard barbecue to a weekend excursion out into the woods. And it sports a stainless-steel body that should be up for the challenge. It's lightweight, but the build is sturdy enough that you shouldn't fret that you've got fragile cargo with you (just be aware that there is a tap faucet to think about, so you might not want to jostle it around too much). There's also a convenient handle secured onto the top, making it easy to carry around with a finger or two while also traveling with beach bags and other outdoor necessities.

In terms of appearance, the uKeg Go is sportier and sleeker than the company's traditional uKeg model, looking more like an insulated bottle from HydroFlask or Stanley than a piece of brewery equipment. And there are two colors to choose from: a uniform tungsten gray model and a slightly bolder chili red, which is what I went with.

You can pick up a uKeg Go for $99 on both the GrowlerWerks website or Amazon. There’s also the company’s standard uKeg growler that ranges from 64 to 128 ounces and features a much more nuanced CO2 system. That'll run you $159–$209, depending on the exact model you get. And if coffee is more your speed, the company recently released the uKeg Nitro ($199) model that dispenses creamy, nitro-infused cold brew with the pull of a lever.

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.