I Tested 13 Insulated Tumblers (Including Stanley) to Find Hydration Heroes

When I bought a Stanley tumbler a few years ago, I was surprised by how much I disliked it, as did my husband and my dogs. The tumbler caused us all to jump whenever it fell over with a thwack, water pouring out from around its straw. With its tapered base and top-heavy design, it toppled over all the time.

Thus, I was happy to find out that Stanley’s lid was redesigned, with a silicone seal that holds the straw in place and (allegedly) prevents the sort of splashes I'd grown accustomed to. That, coupled with the virality of the aforementioned ginormous cup (Stanley’s sales jumped from $194 million in 2021 to about $750 million in 2023, according to CNBC), made me want to formally test insulated tumblers—those from Stanley, Simple Modern, Yeti, Owala, Hydro Flask, and more. 

To evaluate these tumblers, I drank from them (obviously), tested their cold retention, looked at how much they leaked when tipped over, and more.

A Few of Our Favorite Tumblers, at a Glance

The Best Tumbler

Simple Modern 40 oz Trek Tumbler with Handle and Straw Lid

$35

$30 at Amazon

If it's a large, totally leak-proof tumbler that comes in tons of colors you want... this is the one to get. Why? Simply put, it had the best cold retention.

Another Great Insulated Tumbler

Owala 40-Ounce Tumbler

$40 at Amazon

The handle on this tumbler was wicked comfortable to hold, finished second in the cold retention test, and had an easy-to-attach lid.

The Best Stanley Tumbler

Stanley Quencher ProTour Flip Straw Tumbler

$35

$27 at Amazon

The Stanley. Perhaps you've heard of it? This tumbler is worth the hype. It's well-balanced with a grippy handle, and it's practically indestructible. Oh, and the straw locks shut when not in use. If you want the original Stanley tumbler, check out the Stanley Quencher.

The Tests

• General Use Test: I evaluated how easy it was to remove and add each tumbler’s lid and what it was like to hold and drink from. 
• Leakage Test: I filled each tumbler with water and then repeatedly tilted it over the sink to see if it leaked.
• Cold Retention Test: After filling each insulated tumbler with 100 grams of ice and cold (45°F) water, I placed the lids on and took the temperature every two hours for 16 hours using an instant-read thermometer.
• Cleanup Test: I washed the tumblers by hand, then placed the dishwasher-safe models (which were all of them) in the top rack of the dishwasher to see how they fared. 
• Long-Term Testing: All of my favorite tumblers have entered long-term testing (she writes, currently drinking from the Simple Modern). I will update this review with any notable findings. 

What We Learned

Are Insulated Tumblers Safe to Drink From?

In light of concerns about Stanley's tumblers containing lead, I wanted to address it quickly. Yes, Stanley's bottles do have a lead pellet in their enclosed base, but the tumbler would have to be severely damaged to expose it. It's also worth noting this is and has been true for many vacuum-insulated bottles, including Yeti. If you're worried about this, there are a couple of brands (like Hydro Flask and Owala) that don't use lead in their manufacturing process.

Twist-On vs. Press-In Lids

The insulated tumblers either had twist-on or press-in lids. Neither was better or more secure (both styles had winners that leaked and others that didn’t), so it’s a matter of preference. For those with dexterity or hand strength concerns, the press-in lids were easier to add and remove. The Yeti and MiiR in particular had sizeable plastic tabs on their lids, which you can press your thumb upwards on and use to pop the lid off (though the Yeti requires more force).

As far as the twist-on lids, I struggled at one point to thread all of them but managed after a try or two. Ultimately, other factors (like the straw) superseded any lid qualms. 

Straw Placement and Size

A few of the tumblers (the Owala, Hydro Flask, and MiiR) had straws located in the center of the lids. For most (i.e., those who aren’t testing a dozen insulated tumblers side-by-side), this placement will be unnoticeable. However, I found straws that were located closer to the edge and set at a slight angle were more comfortable to drink from. This way, you don’t have to crane your neck over the top of the tumbler or tilt it when sipping. That said, my winners include both straw placements.

The best tumblers were also a joy to drink from, providing an ample amount of water effortlessly with each sip. A couple of the tumblers (the Swig Life and TeamVV) had narrower straws than the top performers, providing noticeably less water and more resistance when I drank from them. 

Leakage: Expect It

Unlike water bottles, you shouldn’t expect most insulated tumblers to be leakproof. With their tapered, narrower bases and uncapped straws, they’re bound to be tip- and leak-prone. However, this doesn’t mean water should flood from them. 

Most of the insulated tumblers dribbled during the leak test, specifically around their straws. The ones that didn’t (like the Simple Modern and Owala) had tighter silicone seals holding their straws in place. It was to the point where I had to forcefully pull the straw out of the Simple Modern to get it to budge. If a leakproof tumbler is your priority, you now know which one to get. 

All of the Insulated Tumblers Kept Water Cold

All of the insulted tumblers had double-walled insulation (the Owala and Corckcicle were even triple-layered) and kept the water cold for a substantial amount of time. After six hours, most warmed just a few degrees—though the Simple Modern was the only one with ice still in it. Even once 16 hours passed, the warmest tumbler was at 53°F. That’s still chilly!

The Criteria: What to Look for in an Insulated Tumbler

The best insulated tumblers have large, comfortable handles, excellent cold retention, wide straws that provide a smooth sipping experience, and a reasonable amount of (or no!) leaking when tipped over. 

Our Favorite Tumblers

The Best Tumbler

Simple Modern 40 oz Trek Tumbler with Handle and Straw Lid

$35

$30 at Amazon

What we liked: With the best cold retention of all the models, the Simple Modern impressed me, especially at such a reasonable price. Its handle was ergonomic and comfortable, and its straw was wide and at a slight angle. It’s also leakproof: no water came out, even when I rested the tumbler on its side. It comes in a ton of colors, too.

What we didn’t like: The screw-on lid has a low profile, giving your fingers just a quarter of an inch to hold onto and twist to remove. 

Key Specs

• Materials: Stainless steel
• Weight: 1 pound
• Stated capacity: 40 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes
• Other sizes available: 30 ounces

Another Great Insulated Tumbler

Owala 40-Ounce Tumbler

$40 at Amazon

What we liked: Another leakproof option, Owala’s handle was one of my favorites thanks to an indent that ran down its length, providing a comfortable place for my thumb to rest. It did the second best in the cold retention test, and its screw-on lid was large and grabbable. 

What we didn’t like: The Owala’s straw is located in the center of the lid, though it can be tilted slightly. I found this to be less of a convenient placement. 

Key Specs

• Materials: Stainless steel
• Weight: 1.6 pounds
• Stated capacity: 40 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes
• Other sizes available: N/A
  

The Best Yeti Insulated Tumbler

YETI Rambler Mug with Straw Lid

$42 at Amazon View on Yeti.com

What we liked: With a sturdy, press-in lid and angled straw, the Yeti is a joy to drink from. I like that its straw has a bumper on the bottom, so it can’t be accidentally pulled up and out of the lid. It didn’t have a silicone stopper, but it did shockingly well in the leak test. Unlike other brands, Yeti’s smaller sizes have the same shape and handle, so I can confidently recommend those, too. Throughout long-term testing, I've dropped this tumbler many times. The only damage it's sustained is some chips in its pink coating at the handle.

What we didn’t like: It did well in the leak test, but it wasn’t impervious to drippage. 

Key Specs

• Materials: Stainless steel
• Weight: 1.7 pounds
• Stated capacity: 42 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes
• Sizes available: 25 and 35 ounces

The Best Small, Lightweight Insulated Tumbler

Miir All Day Straw Cup

$40 at Amazon

What we liked: This smaller insulated tumbler has a press-in lid that pops in and out with surprisingly little resistance. That said, it was one of the three models that didn’t leak (thanks to its press-in silicone straw that formed a tight seal on the lid). 

What we didn’t like: Its straw is located in the center of the lid, and it’s not available in a larger size. 

Key Specs

• Materials: Stainless steel; powder coat finish
• Weight: 1.5 pounds
• Stated capacity: 32 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes, though hand-washing is recommended
• Other sizes available: N/A

The Best Insulated Tumbler with a Silicone Straw

Hydro Flask All Around Travel Tumbler

$35

$24 at Amazon View on Hydroflask.com

What we liked: Those with an aversion to sipping on a hard, plastic straw will like the Hydro Flask’s flexible, silicone mouthpiece. It did well in the cold retention test and was nice to drink from. My sister's been long-term testing this one for me for about a year and loves it so much she brought it with her on a recent trip to Japan.

What we didn’t like: Water dripped from around the straw, which is located in the center of the lid. I wish the press-in lid’s tab were larger, as this would make the lid easier to remove.  

Key Specs

• Materials: Stainless steel
• Weight: 1.5 pounds
• Stated capacity: 40 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes
• Other sizes available: 32 ounces

The Best Tumbler with a Retro Vibe

Corkcicle Cruiser 40oz Tumbler with Handle

$45

$27 at Amazon

What we liked: The handle on this insulated tumbler was great and grippy, thanks to a silicone piece that ran down the inside of it. It did very well in the cold retention test, and if you get one of the brand’s multi-hued colors (bright blue and pink; pink and green!), the Corkcicle gives off a fun ‘80s, Saved by the Bell vibe.

What we didn’t like: This model leaked around the straw and the lid’s slider.

Key Specs

• Materials: Stainless steel
• Weight: 1.34 pounds
• Stated capacity: 40 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes
• Other sizes available: N/A
  

The Best Stanley Tumbler

Stanley Quencher ProTour Flip Straw Tumbler 40 oz

$45

$41 at Amazon

What we liked: If you are a fan of the original Stanley Quencher, you'll like the Stanley ProTour (probably better). It has a secure locking straw that refused to leak, even when vigorously shaken upside-down. The straw is sturdier than the Quencher's straw, which amplifies the ProTour's overall durability. It's a much more portable option than the Quencher, because you don't have to remove the straw to seal it. Like the Quencher, it fits in car cupholders but isn't tippy, has a comfortable handle with finger and thumb grips, and comes in loads of colors. Editor Rochelle Bilow has brought it on multiple trips and says it's never dribbled in her carry-on bag, even when running through the airport.

What we didn't like: The huge assortment of colors is only available in the 30- and 40-ounce sizes. The 20- and 64-ounce sizes have a limited selection.

Key Specs

• Materials: Stainless steel; powder coat finish
• Weight: 1.4 pounds
• Stated capacity: 40 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes
• Other sizes available: 20, 30, 64 ounces

Another Great Stanley Tumbler

Stanley Quencher H2.0 FlowState Tumbler

$44 at Amazon

What we liked: Ah, yes, the social media hydration superstar! However, this tumbler is actually great: Nicely balanced, its other highlights were a large handle with grippy silicone portions, a twist-on lid, an angled straw, and super-smooth sipping. My long-term tester reports no issues with this tumbler, either.

What we didn’t like: It did leak a bit, but not the worst out of the bunch, and certainly not enough to not recommend it. 

Key Specs

• Materials: Stainless steel; powder coat finish
• Weight: 1.4 pounds
• Stated capacity: 40 ounces
• Fits in a car cup holder: Yes
• Dishwasher-safe: Yes
• Other sizes available: 14, 20, 30, 64 ounces

The Competition 

• Stanley IceFlow Stainless Steel Tumbler with Straw: Though this insulated tumbler had excellent cold retention, its straw (which locks into its lid) was hard to push up and press back down. 
• Swig Life 40oz Mega Mug: The floppy silicone upper and overall smaller straw size meant this tumbler required more effort to drink from. It also leaked more than other models.
• TeamVV 40 oz Tumbler: I liked the silicone bumper on this tumbler, but the thin straw was less pleasant to drink from, and the dual-sided lid leaked substantially.
• OXO Strive XL Tumbler: This is a fine insulated tumbler, but it doesn't offer a size larger than 32 ounces. This is the same as the Miir, but the OXO is slightly leakier.
• Klean Kanteen Rise Tumbler: This tumbler is fine. It has a slim, rectangular handle that isn't as comfortable to hold.

FAQs

Who makes the best insulated tumbler? 

After testing 13 insulated tumblers, I named models from Simple Modern, Owala, Stanley, and more as top picks. However, all of the tumblers had excellent cold retention and were fairly comfortable to drink from.

How do you clean an insulated tumbler? 

All of the tumblers I tested were dishwasher-safe (some specified they had to be placed on the top rack). However, insulated tumblers can also be cleaned by hand with a sponge and hot, soapy water. I recommend buying specific brushes to deep-clean their straws, though.

Which tumbler keeps water cold the longest? 

In my test, the Simple Modern tumbler kept water the coldest, with it being the only insulated tumbler that still had ice in it after six hours.

What's the most expensive Stanley cup?

That would be the 96-ounce IceFlow Flip Straw Jug at $90.

Why We’re the Experts

• Riddley Gemperlein-Schirm is the associate editorial director at Serious Eats and has been with the site since 2021.
• She previously worked at America’s Test Kitchen, Food52, and EatingWell. 
• She’s been reviewing equipment professionally for about six years and has written many reviews for this site, including dinnerware sets and air fryers.
• For this review, Riddley tested 13 insulated tumblers. She evaluated their cold retention, usability, leakage, and more.