If you're wondering what is the best travel mug, you're not alone.  There are thousands of travel mugs, tumblers, and coffee bottles on the market today, so it can be a big overwhelming.  The good news is that I've collected, tested, and overanalyzed many of the most of the popular brands over the years for this business, and today I'll show you my full collection to help you find the best travel mug for your preferences and lifestyle.

Depending on where you look, this type of bottle may also be called "travel tumblers," "travel bottles," or "coffee bottles."  Because this post focuses on mugs and tumblers that are easier for traveling, ones with side-mounted handles are not included because they are not as compatible with many cupholders.  But we'll have a separate post focusing on those soon!

This video goes into even more detail and analysis about each bottle by ranking them all according to 12 different criteria, so check this out for an even deeper dive!

Whether you go with Fellow, Stanley, YETI, or Zojirushi, these are two fo our most popular recommended accessories that help make cleaning any big reusable bottle much easier.

These are the two travel mugs I've recently found myself going back to most regularly when I'm not deliberately testing a new one.  They each have a great combination of features that make them outstanding options for everyday use.

Worst Travel Mug for Everyday Use: Frank Green (more on this further down)

Honorable Mention: Stanley Aerolight Transit (narrow design, lid cover pushes all the way back to stay out of your view), Owala SmoothSip (tapered for cupholders, one-handed open/close)

Worst Travel Mugs for Driving: Fellow Carter Move (2-handed open/close, wider base than most, lid isn't tethered, wide mouth with the fastest flow even with the splash guard inserted), YETI Hotshot (very bulky, 2-handed open/close)

Honorable Mentions: Stanley Aerolight Transit and YETI Hotshot

Worst Travel Mugs for Insulation: With vacuum insulated bottles, most heat transfers through the lid.  That's why a general rule-of-thumb is that bottles with wider rims have worse insulation.  This includes traditional tumblers like YETI's Magslider, Healthy Human's Cruiser, Owala's SmoothSip, Simple Modern's Voyager, and Weto Weto's tumbler.

Honorable Mention: Hydro Flask Flex Sip (has a handle that you can grab with one finger when holding other things, like if you're carrying several things and your bottle to a meeting), Stanley Aerolight Transit (good combination of small diameter to take up less space, lightweight, and good insulation)

Worst Travel Mugs for Home or Office: YETI Hotshot (very large and bulky with no handle)

Honorable Mention: Zojirushi (for a complex lid it's well-designed and surprisingly easy to clean, but you'll want several brush sizes from a kit like this one)

Worst Travel Mugs for Easy Cleaning: Frank Green (ridiculously complex to disassemble the lid) and Simple Modern Voyager (unable to disassemble the lid)

Least Durable Travel Mugs: Frank Green (many small plastic parts), Zojirushi (scratches easily), Weto Weto (slider is hard to clean around without damaging the plastic connection)

Worst Travel Mugs for Arthritis: YETI Hotshot or Commuter (have to twist hard to disassemble the lid for cleaning), Frank Green (complex lid design with many small parts), Hydro Flask Flex Sip (complex lid for cleaning, but better than the prior two), Owala SmoothSip (slider is tricky to use and disassemble if your hands have limited mobility or strength).

These travel mugs have the best combination of a range of criteria and test results, making them a great fit for the widest range of people and uses.

These are all solid options that many people use and they can excel at certain criteria, but in most cases there's at least one major drawback or they're not particularly exceptional overall.

These can serviceable, particularly for budget-friendly options.  But at some point you may want to upgrade.

Very rarely do I straight-up recommend avoiding a particular bottle, but in this case I believe it's warranted.

Big thanks if you use a link to buy!  Those impartial referrals are what help me purchase every product tested and avoid direct sponsorships, all to help reviews like this continue to be completely unbiased.

Thanks again, and happy hydrating (and caffeine-ating).

Update 9/20/2025: Check out our new Best Bottle Calculator!  It takes the information from this post and makes it even easier to find the bottles that are the best matches for your lifestyle and preferences.

This guide cuts through all the biased marketing to help you find the best insulated bottle that fits your lifestyle and preferences.  We'll specifically focus on bottles that are meant for general everyday hydration, so no fancy filter or infuser bottles here (but we have other guides that include those).  Don't worry though because you'll still see plenty of options, including 21 different stainless steel bottles and 1 plastic for comparison, each having its own strengths and weakensses.

Buckle up, and let's find your new favorite everyday bottle!

​​​​​​​​We also cover this in a YouTube video if you'd prefer to watch the recap!​

Here's the full list, and I'll likely add bottles and update this post as I purchase more of them.

• BruMate Era 40oz
• Camelbak Chute Mag 32oz
• Cirkul 32oz
• EcoVessel 32oz
• Fjbottle 32oz
• Hydro Flask Standard Flex Straw 24oz
• Hydro Flask Trail 32oz
• Hydro Flask Tumbler 40oz
• Hydro Flask Wide Flex Straw 32oz
• Klean Kanteen TKWide 32oz
• Nalgene 32oz
• Owala Bottle 32oz
• Owala Sway Tumbler 30ozamzn.to/4mIut3x
• Ozark Trail 32oz
• RevoMax 20oz
• Simple Modern Tumbler 40oz
• Stanley IceFlow 2.0 30oz
• Stanley Protour 40oz
• Stanley Quencher 40oz
• S'well Original 25oz
• Takeya Actives 32oz
• YETI Rambler 36oz

Whether you go with Owala, Hydro Flask, YETI, Stanley, or one of countless other options, these are our two most recommended accessories for any large reusable bottle.

In this section, we'll run through each criteria according to the SABCD format, where "S" is the best and "D" is the worst.

All of the other bottles mentioned here are leak free, including Brumate, Camelbak, Cirkul, EcoVessel, Fjbottle, Hydro Flask Wide Flex Straw, Hydro Flask Standard Flex Straw, Hydro Flask Trail, Klean Kanteen, Nalgene, Owala, Owala Sway, Ozark Trail, Revomax, Stanley IceFlow, Stanley ProTour, S'well, Takeya, and YETI.
​
If you have issues with them leaking, check the seals to make sure they're clean and properly seated and that the spout or threaded connections are closed all the way.
​
​And notably, if you prefer tumblers with the large side mounted handles, Brumate's Era and Stanley's ProTour are good options with leak-free lids.

​Now let's look at insulation, and there are some clear winners and losers.

Bottles with the Worst Insulation
Nalgene was technically the worst bottle in this review, but that makes sense because it's the only non-insulated bottle (included it for reference).

Of the vacuum-insulated dual wall bottles, the worst results were from:

Now let's look at which bottles are most likely to last you 20 years instead of just two.

The logic behind the rankings can be admittedly tricky to follow.  For example, some bottles may have one feature that make them more durable (Owala's spout is fixed), while also having other features that drop them down the rankings (Owala's lid cover has small plastic parts and springs).  The rankings are my best attempt to take all these different factors into account based on observations, testing, and how each one feels in-person.  If you have any questions, feel free to reach out.

In most cases, leak-proof straw lids are not a good choice if having the most durable bottle is important to you.  Straw bottles typically either have flip-up spouts or fixed spouts with a cover, and both have their own benefits and drawbacks.

The bottom line is any stainless steel bottle can dent if dropped, but differences in the construction, lid, and finish can make one a better option than another if durability is your most important criteria.

Now let's look at how easy each bottle is to clean, which is very important but many people don't consider when buying.

The rankings initially focused on which bottles are easiest to deep clean.  Then I adjusted that ranking up or down based on how dishwasher-safe both the bottle and lid are.

Since leak-free straw lids are some of the most popular options on the market, some brands have made real improvements that make their bottles easier to keep clean.

Let's face it, big bottles like these can be a pain to bring with you, but having a good handle can make all the difference.

This is more of a preference, so it didn't play into the rankings for best handles (but it will in the next section).  But the handle design is noted in the Best Bottle Spreadsheet for quick reference to make things easier.

The overall size and weight of the bottle also plays a role in which one's a good fit for your lifestyle.  A good handle definitely helps, but maybe it's not a good fit in your car or you're looking for something that takes up less space on your desk.

​I thought about standardizing this part and picking all of the bottles that are closest to 32 ounces since the size bottle you get factors into how cumbersome it is, but I also wanted to focus on bottles I actually own and can test.  Also, this way the recommendations you'll get in the Best Bottle Spreadsheet are ones you've seen in this post.

So I ended up just adding notations to the chart so you can see how different volumes from different brands compare., but it's certainly a good idea to consider buying different size options of a certain brand if you like everything else about that bottle.

This criteria is pretty straighforward, and the two main factors that I looked at were the weight and bulkiness of the bottle.

Let's face it, 20 years ago, you'd have called me crazy if I said everyone would be walking around with +$35 bottles.

The rankings are split like this:
Below $20: S
$20 - $30: A
$30 - $40: B
$40 - $45: C
Above $45: D

Each one is ranked based on the list price, but keep an eye out for price breaks because most of these brands run sales all the time or might be higher priced if they are low on inventory (especially with color drops).

The bottle volume also plays a big role in the price since bigger bottles cost more than smaller one of the same style, but like I mentioned in the previous section, this list sticks to bottles I actually own and that will show up in the Best Bottle Spreadsheet (though I'm planning to expand that spreadsheet in the future).

For the commuters and road warriors, having a bottle that can stay secure next to you when on the road can be very helpful.

LEGAL DISCLAIMER
Be sure to check with your local laws to make sure sipping while on the go is OK since it counts as distracted driving in some areas.  Even if it's legal where you live, it's a good idea to get a bottle or a cup holder adapter setup that will make staying hydrated in the car easier and safer.

How well-known the brand is can make be a real factor, particularly if you prefer to have a viral bottle or you're giving one as a gift.

These three are at the top of the water bottle world right now.

These are still great bottles in the right circumstances, and it's also important to re-state that this is just for the bottles in this post.  But these are not as widely-known or prestigious, so they may not be as good of options for gift-giving.

This criteria is pretty hard to classify since different bottles are popular for different people, but I looked at a combination of places to come up with this list, which is my best attempt to rank them in an way that's unbiased towards any particular style, brand, or generation.

​Now we have one more step to come up with your personalized recommendations.  If you click the link below, you'll see an Excel file on my Google Drive.

You won't be able to edit it while it's on my Google Drive since that would change it for everyone else too, so download it first then make your edits.

The first tab "Start (Ranking)" looks like this and is where you'll enter how important each criteria is to you.

You know all those ranking charts from before?  This spreadsheet converts the tiers into numbers, with higher numbers being better.  Then it calculates a weighted total for each bottle by multiplying the tier numbers and your rankings for which criteria were most important.

Click the 2nd tab "Your Recommendations" to see something like this.

Click the sort button on "Total" (cell X7), then sort from largest to smallest. This re-arranges the list, and the bottles with the highest point totals are the best matches for you.

Review all the other info like the handle type to really hone in on what you'd prefer, and consider how different lids and sizes could change things too.

Then to see current pricing, click the hyperlinks on the "Link to Listing" column (column AG). Most go to Amazon, but Owala's Sway goes to Target and Ozark Trail goes to Walmart.

Comments:

• It's just a simple Excel file and doesn't have any macros or programs in it, and if you're not comfortable downloading it this way, send me a message on bottlepro.net and I'll email it to you.
• I tried it in Google Sheets, but the sorting function didn't work right when it converted. So it currently only works in Excel. I'm planning to add the Sheets version in the future.
• This is just covering the everyday hydration bottles that I personally own, but there are THOUSANDS of other options. This is meant to be a great starting point to help you narrow your search based on what's important to you, but definitely shop around.  There are a lot of great brands out there that aren't even covered here.

After you've narrowed your search, check out the bottle's listing for more info.  You can also look at this other post, which focuses less on rankings for each criteria and more on the individual features for each bottle.

Or if you've really narrowed it to just a few bottles, there are a couple links below.

• IMAGE LINKS - See our info page for that bottle.  We're still adding some details like the latest cold water insulation tests, but they already contain A LOT of compiled useful information and most common questions (like measurements to check with your cup holder).
• BUTTON LINKS - Most link to Amazon, but a few go to Walmart (Ozark Trail) or Target (Owala Sway) if it's not on Amazon.

​Today we're exploring the question, will a dent affect your bottles insulation?  Unless you have Spiderman-like reflexes, inevitably you will drop your bottle.  Plastic bottles like Nalgenes will be fine, but dual-wall stainless steel bottles are a different story.  Steel is a very strong and durable material for water bottle construction, but one major downside is that it is prone to denting.

​Many of these water bottles are not exactly cheap, costing as much as $50 for larger bottles from brands like YETI and Hydro Flask.  So if you've invested in a brand you love, you want to know that your insulation still works, right?

​The truth is that dents CAN affect your bottle's insulation, but it's not as simple of a question to answer as it may seem at first.  The location and size of the dent play a role, so there are more things to consdier than you might expect.

So today we're exporing the question, "which dents affect your bottle's insulation?"

Coming Next:

• Reviewing why insulated bottles work
• Cutting open bottles (for science!)
• Insulation tests after dropping a bottle from greater and greater heights

I recently posted two videos about this test.  One that's a 3-minute recap of the most important details, and another that's a full-length 18-minute video showing more of the testing footage and general information about these types of bottles.  They each cover similar info as this post, so check those out if you'd prefer to watch the recap!

From cutting open these two bottles, ​I found that the spacing between the two layers is much wider on the bottom compared to the sides.  So your bottle can have bigger dents on the bottom and still hold its insulation, which is probably by design because the bottom is the most likely place to get a dent.  But if you are unlucky enough to drop your bottle on its side onto a rock or something else that dents it there, then the dent doesn't need to be as deep to create a contact point between the two layers.

It's not just the location of the dent, but also the severity that matters.

Smaller isolated dents can create contact point between the two steel layers.  Any contact point like this is going to be a pathway for heat transfer through conduction, so these dents can affect your insulation.  But the good news is that your bottle will still have good insulation around the majority of it, so it won't be a complete failure.

Worst-case, you might get a larger dent that cuts through the outer layer of steel. This allows air to enter the space between the steel layers to replace the vaccum, and then your bottle will be not better at insulating than a single-wall bottle.

​Next, I stress tested a RevoMax bottle by dropping it from increasing heights.  I did a 4 hour insulation test before the test and after each drop.

The bottle took A LOT of damage before the insulation was effected, even including some dents with extreme buckling and folding of the steel.

The bottle still had the same insulation after 12", 24", 36", and 48" drops.

Eventually the insulation was completely compromised (Failure B mentioned above) after the 60" drop.  This occurred when multiple dents with severe buckling overlapped, and that overlapping area is where there was too much repeated strain on the steel to the point that it cut through the outer layer.

So the main reason the insulation failed is because the compound dents overlapped.  I wouldn't be surprised if the bottle would have held insulation after a single 60" drop.

In the vast majority of cases, YES!

​​The bottom line is that you probably don't need to worry about your bottle's insulation being compromised by a dent.  Most dents, even really severe ones, are not large enough to affect the insulation.  Plus, the vast majority of people will replace their bottle before the insulation is affected because large dents can make the bottle sit wobbly, which is pretty annoying.

​But if you like to hang onto your bottles longer than the average person and you start to get overlapping major dents, that's when you would be more likely to start seeing your insulation get worse or potentially even competely fail.

​But if you have any doubts, do an insulation test.  Fill your bottle with the hottest water from your sink, measure the temperature, then let it sit for about 4 hours and measure it again.  If the temperature dropped less than ~10 degrees F, your insulation is still probably good.  More than ~10 degF and you might have a problem.

Other than never dropping your bottle EVER, there plenty of effective, easy options to keep your bottle protected and insulation as-designed.  Here are a few to consider:

• Nuovo Adjustable Carrying Pouch
• BottlePro's Neoprene Sling: https://amzn.to/3TMVrLF
• Hydro Flask Bottle Boot: https://amzn.to/43ynstN
• Hydro Flask Bottle Carrier: https://amzn.to/4ctTlHI​

You’ve probably heard about dual-wall insulated bottles, but what about triple-wall?  If two walls are good, then three are better, right?  Let’s find out.

Dual-wall stainless-steel bottles have been around for a long time, and brands like Hydro Flask and YETI really launched them into mainstream use within the last decade.  Each bottle has two walls of stainless steel with a vacuum in between, and the lack of air reduces how much heat can transfer in or out.  We tested quite a few of these bottles for a video earlier this year, and that turned into one of our best-performing posts.
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Triple wall bottles are not as widespread, but there are a few brands out there marketing this type of design, including S’well, RevoMax, EcoVessel, and Owala.  We didn’t discuss this type of bottle as we would have liked in our previous insulation test video, so we thought now would be a good time to revisit it, this time with a focus on seeing if the triple-wall design is worth the marketing hype.

Before we get started, there are a few details to point out.

1. Hot vs Cold: In our previous video, we weighed ice before and after to determine how much of it had melted.  This time, we’re doing a hot-water test and using a thermometer to measure temperature.  We changed this up to try to make the test more reliable, and because insulation is the resistance to temperature change in either direction, it doesn’t matter if we’re testing hot or cold.  We should still get the same relative results and rankings for each bottle.
   
2. Bottle and Mouth Size: Most of the bottles we tested hold 32 ounces, but we have a few other bottles that we wanted to test too.  We also had a couple of bottles that are narrow mouth instead of wide mouth.  For an ideal test, all of the bottles would have the same volume and the same mouth opening diameter. We’re a small channel that can only afford to buy so many bottles, so we’re working with what we have.  That being said, our results will still give you a pretty good idea of what to expect, especially if you’re looking for a 32-ounce size.
   
3. Lid Design: Different lids have different insulating properties.  Because our primary goal is to test the insulation differences between dual and triple walls, we wanted to remove the variable of the lid design from our test.  More on this later.
   
4. Triple-Wall vs Triple-Layer: finally, the term “triple-wall” is a bit misleading.  We’re going to spend a couple minutes geeking out about thermodynamics to explain how it works, so skip ahead if you’re like to move straight to the test.

Many people assume triple-wall means three walls of stainless-steel, but that’s not correct.  If you look closely at the marketing and listings, you’ll notice that it probably says “triple-layer” instead of “triple-wall.”  It’s a small but significant distinction because they don’t really have three walls.  They have the same dual wall construction with a vacuum in between, and the third layer refers to a copper coating on one of the stainless-steel walls.

From S'well's website:
“Thanks to our Therma-S'well® Technology and triple-layered insulation, which includes a copper layer, S'well products are able to keep any liquid hot or cold for long stretches, while maintaining a condensation-free exterior.”

Emissivity is a material property that indicates how efficiently heat is transferred by radiation.  A material with a lower emissivity value will transfer less radiant heat compared to a material with a higher value.  Copper has an emissivity of 0.05, so while the copper coating won’t do much to prevent heat conduction, it will help prevent heat radiation.  For reference, stainless-steel has a higher emissivity of 0.59, so the steel won’t prevent radiation heat loss as efficiently by itself.

We looked at 14 total bottles.  11 bottles are dual-wall, and 3 have triple-layer insulation with the copper coating.

Dual-Wall:

• Klean Kanteen 32-ounce TKWide Insulated
  
• Hydro Flask 32-ounce Flex Straw
  
• Hydro Flask 32-ounce Trail Series (lighter)
  
• Takeya Actives 32-ounce (includes Matching Bottle Boot)
  
• Camelbak Chute Mag 32-ounce
  
• Ozark Trail 32-ounce
  
• Steepware 22-ounce Tea Tumbler
  
• FJbottle 34oz
  
• YETI 36-oounce Chug Cap
  
• Iron Flask 40-ounce
  
• Stanley Quencher 40-ounce
  

Triple-Layer:

• RevoMax 32oz
  
• EcoVessel Boulder Series 32-ounce
  
• S’well 25oz (the narrow mouth from this video)
  

We were originally going to boil water to recreate steeping tea or brewing coffee, but it would have taken quite a few batches and taken a lot longer.  So instead, we filled up each bottle with the hottest water from our sink.

As mentioned before, different lids have different insulating properties.  Because our main goal was to compare the triple-layer vs dual-wall insulation, we wanted to keep the different lid styles from impacting the results as much as possible.  We purchased a sheet of Styrofoam insulation, cut it into a bunch of smaller pieces, and pressed them onto the rim of the bottles.  This created an impression in the Styrofoam pieces that helped limit the potential for gaps and temperature loss.​

We poked a hole through each piece of foam with our thermometer, and we used a few other smaller pieces of insulation to cover up the holes when we weren’t taking measurements. ​

We measured the temperature every hour for the next four hours, again around hour 8, and one more time around hour 20.  With each measurement, we inserted the thermometer through the hole in the Styrofoam cap until the temperature equalized.
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This chart and graph show the percentage temperature change at different times during our test, which lasted 19 hours and 31 minutes.  Temperature drops ranged between 17.2% on the low end to 27.0% on the high end.  Looking closer at the data, there are a few interesting results to note.

Two of the triple-layer bottles, RevoMax and S’well, had the best results.  The third triple-layer bottle, EcoVessel, didn’t fare as well, but it was still in the top five.

The best dual-wall bottle really surprised us.  Ozark Trail, the Walmart brand bottle that we bought for $11, had an 18.5% temperature loss.  Compare that to 20.9% for a $50 YETI Rambler and 24.2% for a $45 Hydro Flask.
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The worst bottle by a wide margin is Steepware, which is a bit ironic given that it’s primarily made for brewing tea.  That being said, it’s probably not a major concern because most people will drink the tea within a few hours before it goes stale.

So based on the results, it does appear that the copper layer may have an impact and helps insulation.  However, depending on which brands you’re comparing, the difference between triple layer and dual wall insulation might not be as great as you would have thought.  When you average the percent temperature loss for dual wall vs triple layer bottles, you get 22.7% and 18.3% respectively.  A 5% difference over 20 hours is significant, but it’s not really game-changing in our opinion.

However, there’s another big variable that makes this conclusion a bit uncertain.  We can’t afford to buy every type of bottle, and it just so happens with our bottle collection that the two best performing bottles were also our only two narrow mouth bottles.  Because most heat is lost through the lid and mouth opening, narrow mouth bottles should have an advantage over wide mouth ones.  We’d like to do another test in the future that focuses on wide-mouth vs narrow-mouth insulation once we have more narrow mouth bottles to compare.

But let’s face it, you’re not going to be walking around with one of these bottles with a Styrofoam cap.  We did the test first because we wanted to isolate the effect that the copper layer has on the insulation, but the more practical test that you can use compares the bottles when using the lids that they come with.  So we ran a 2nd version of the test using the bottle lids.

For each measurement, we swapped the bottle lid with the Styrofoam piece from the previous test.  Then we pushed the thermometer through the Styrofoam, and this prevented excessive temperature loss for the 15-20 seconds that we needed for each measurement.  Once we had the reading, we put the normal cap back on.

​This test lasted for 19 hours and 17 minutes, and we made the same type of chart and table to show the results.  Right away, there are some interesting data points and details to unpack.

The relative rankings were mostly the same as with Test A, but there was a much wider range of results with a 13.5% temperature drop on the low end to 30.1% on the high end.  That’s an increase in the range of results from 9.8% with Test A to 16.6% with Test B.

The same two brands performed the best (RevoMax and S'well), but they widened their lead significantly.  However, keep in mind that these are the only two narrow-mouth bottles in our test.

Ozark Trail had a great showing again, and this was the best dual-wall bottle in both tests.
​
Unfortunately for Steepware, this bottle was even more of an outlier on the wrong side of the average compared to Test A.

​While the relative rankings were similar for both tests, you may have noticed the rankings did change in some cases.  For example, Hydro Flask’s Trail Series jumped from the 2nd worst with Test A to the middle of the pack with Test B.  Since the only change between the two tests was that we switched from the standardized foam pieces to each brand’s lid, any changes in the rankings means that some brands have designed lids with better insulation than others.

Standardizing the Results
Tests A and B had slightly different total durations, so to better illustrate how the results for each bottle changed between the tests, we needed to standardize the results.  We calculated the temperature drop per minute over the duration of both tests, then we multiplied that by 1200 to simulate a 20-hour test.  Then we compared Test A vs Test B for each brand, and this graph shows how each brand changed.

​Bottles that fall on the left side had better results with their brand’s lids instead of the Styrofoam cap, and bottles on the right did better with the Styrofoam.  

​S’well, RevoMax, and both Hydro Flasks were the only bottles that improved with Test B.  When you look at the lids with each of these bottles, you can see that they seem to have more built-in insulation, like with S'well and RevoMax.

Most of the other bottle lids like Steepware and Takeya don’t have built-in insulation and just have single layer plastic construction in the cap, so it’s understandable that they didn’t fare as well. ​

​So when we take a step back and look at the results as a whole, we have a few main takeaways.

1. Triple-Layer vs Dual-Wall: Triple-layer construction does seem to help compared to dual-wall insulation, but it may not be as big of a difference-maker on its own as the marketing might make you think.
   
2. Lid Design and Narrow vs Wide Mouth: The more significant factor appears to be narrow vs wide mouth and the insulating properties of each brand’s lid design.
   
3. Price: Price doesn’t guarantee results, as Ozark’s $11 bottle did better than all the other dual-wall bottles, including YETI and Hydro Flask.

​Based on these results, we have a few more video ideas that we may work on in the near future.  Once we have more narrow-mouth bottles in our collection, we want to compare those against wide-mouth bottles.  We also think it would be interesting to focus on premium brands vs budget brands, because let’s face it, we’re probably not the only ones that were surprised that Ozark Trail outperformed YETI.  And finally, we only ran one instance of each test, and for more reliable comparisons and data, we ideally would repeat the test more times and average the results.