Zojirushi Stainless Steel Mug, Black, 16 Ounce

This is literally the best thermos I have ever owned! Temperature: I poured hot tea in it and was so busy I didnt drink it at school all day. So on my way home (10 hours later) I decided I didnt want to waste good tea and took a swig. OMG NOT A GOOD IDEA. It was still too hot for me! Even though I regretted that for a few seconds I was really surprised and impressed by this. Just for fun one time I tested it by pouring boiling water in it then 2 min later putting the cap on. I then checked the temp 18 hours later. Still hot. STILL HOT. Not warm. HOT. I do live in a warmer area so the coldest environmental temp was probably like 68-70F. With a vacuum seal that shouldnt matter but its worth mentioning. Cleaning: so easy! It comes apart and you can just wash and dry everything really well. Then reassemble in a few seconds. I even accidentally left milk and coffee go a little stinky in here once and after a regular wash there was no smell at all. That only happened one time but I was really happy about the lack of reminders of my mistake. Use: I have definitely locked this and just tossed it into my bag before. Its very secure and I have had 0 spills in 6 months of use. Also I like that when you tilt it to drink you dont get a Niagara Falls size gush of liquid onto your face. VIDEO: b/c I was confused about the parts so I thought others could use the help. UPDATE February 2015 (posted as a comment but moved here for visibility): Original video poster here! Glad some of you found my video helpful! I couldn't tell what the parts were and I thought this thermos was awesome and deserved a review so thats why I made it. Anyhow, I have had this same thermos for 1.5 years now and its still going strong. Ive taken it on lots of plane trips, shoved it in various luggages/bins to travel, really abused it as far as a thermos goes. But thats why I bought it! Still keeps my drinks unfailingly hot/cold, doesn't leak, looks great, and is still basically awesome. I even bought a couple more thermoses for family members and they are having the same success. Its worth the up front investment for this one. It does seem like a lot when you have $5-10 choices at supermarkets. I bought a bottle brush to clean it (OXO good grips bottle brush from supermarket) and it works perfectly. I don't take the whole thing apart every time- just give the parts a soapy soak/wash every few times then air dry and reassemble. 1/2023: still going strong. Use weekly or so now, I don’t think this will ever die?

I work in a group home with adults with intellectual disabilities. They are delightful people, but one has a passion for stealing beverages. After losing my Coke (again), I decided to see if a locking commuter cup exists and this looked like it might just work. In order to take a drink, you must slide the lock over and then press the lever. Let’s just hope she doesn’t discover that the top unscrews. I've owned many commuter cups that promised to be leak proof. This is the first one that delivers. I can make my tea at home and carry it to work and not spill a drop. When I first received the cup, I thought I must have been sent the wrong size. There was no way this held 16 ounces. However, I measured it, and it does, indeed, hold 16 ounces. This is perfect for the 2 cups of tea that I make in the morning and for my 12 ounce cans of Coke that I drink when the tea is gone. (No coffee. Ever. But at least I don’t get that nasty coffee smell in the gasket.) Cold drinks stay cold for hours. This is great, because it can take me 4 to 6 hours to finish off my morning tea. I was a bit reluctant to try soda in this, because I have memories of my mom putting Coke in my Thermos back in the early 1970s and finding that the rubber stopper had exploded into tiny bits of sawdust or cork or whatever was inside the stopper when I opened it at lunchtime. I searched the comments here and found that others have successfully put soda in their cups with no mention of anything bad happening, so I was encouraged to try it. I am happy to report that I had no issues with a can of Coke in this cup. If I leave the cup sealed long enough between sips, I’ll get a soft “fft!” just like I do when I open a bottle of Coke after it has been sitting a while between sips. Thus, not only is my Coke kept cold longer in this cup, it retains the fizz longer. That makes this better than a Coke bottle. For the sake of a thorough review, I decided to make some hot tea near the end of a work shift. I put a tea bag and the boiling water into the cup and left the lid off for the 5 minutes it took to steep the tea. Then I put the lid on and waited another 30 minutes before I dared to test the tea. It was still hot, a little too hot to drink. I like my hot beverages hot, but this was too much. 45 minutes later. Still too hot. 1 hour. Too hot. 2 hours. Getting there, but it's bedtime. Too late to drink tea, unless I want to keep getting up all night. I awaken and in a bit I remember my tea. I test it, a full 11 hours after I have made it. It’s still warm. A little cooler than perfection, but drinkable. If there’s a downside to this cup, it’s that my small tea strainer is too large for the mouth of the cup. I have to strain my loose leaf tea into something else and then pour it into the cup. Otherwise, I get tea all over the table. I searched on Amazon for a strainer that’s small enough, and I don’t think one exists. Tl;dr: Leakproof. Keeps beverages hot or cold for hours. It delivers what it promises.

Ok so clearly I love this thing, and I have bought several as gifts. I will say that there are 2 minor annoyances. They are very minor. I would still buy this mug again and again. First, the inner walls discolor very easily. I don't drink coffee, I drink tea. Lots and lots of herbal tea. This is because coffee is disgusting and tastes like burnt death. Why else would so many people feel the need to add milk and sugar and flavor squirts? Nobody drinks black coffee anymore, unless they are in a diner trying to write a novel or look depressed. Maybe you're upset because your coffee tastes awful? Anyhow, I purposefully bought this exact model of Zojirushi mug due to the lack of non-stick coating. Most of their products are coated, which they say is for ease of cleaning. Unfortunately that coating gives you cancer, and I just want hot tea. I have no idea what the discoloration says about the purity or impurity or overall quality of my mug's steel interior. I just know that scrubbing does not keep it totally clean. Maybe this is because I keep my tea in there for 6 or 8 hours at a time. After all, it stays scalding hot - just the way I like it - so I am only able to take tiny sips all day long. Perhaps this time steeps the tea and stains the interior. Otherwise the thing looks perfect and it works as well today as it did when I first bought it over a year ago. This review is for one I bought for a friend, so I've owned mine longer than the date would suggest. The one other teeny tiny issue is that mine leaks from time to time if I don't assemble it perfectly OR if I overfill it. I am greedy and like to get as much liquid in there as humanly possible. So usually it is because I have overfilled. Basically I mention this because if you don't overfill and if you assemble carefully (which is easy) you will be fine. But if you are someone who likes to do a sloppy fast assembly and not think about a fill line (the interior actually has a raised bump that you need to stay below) then perhaps you will not love this mug like I do. If you want pure stainless (it stains - branding crisis!) and a mug that will keep your liquid incredibly hot or cold for at least 6 hours, then you should buy this one. By the way, when I say 6 hours, I mean you will barely have a temperature change in that time. It usually takes me 8 hours to go from scalding hot to easily drinkable - which still slightly burns my throat, but just barely. PRO TIP 1: When I make my tea, I add about 1/2" of room temp water to the mug of boiling water. That makes it so I can easily sip it right away, and it stays perfect for about 3-5 hours instead of 6-8 hours. PRO TIP 2: When I am about to plop my tea bag in there, I remove the paper tag from the string, so it doesn't dissolve into my delicious hot beverage. P.S. I forgot about one other minorly annoying quirk. When you pop the lid open, which is fun because it really springs open, the rubber piece that keeps your liquid perfectly sealed will ALWAYS have beads of your drink on there. I just kinda ignore it or lick it off, depending on my mood. If you drink coffee, which would be such a shame, it might fling a tiny micro bead of brown water into the air. I don't love that it does this, but if it didn't my tea would not stay hot and would probably spill out when I lay my mug down. So I don't let it bother me. Then again, I don't have the wild mood swings of caffeine raging through my veins, so it's hard to know how this might impact someone else.

This is a real vacuum flask. I've used a real-deal vacuum flask for my morning coffer for years now and there's no going back. The "themal" cups you get in super markets don't keep your beverage hot... a true vacuum flask will! I bring this everywhere with me, and panic when I don't have it. I call it my "battery pack". I'm a coffee addict, what can I say? Up until now, I've used the ones made by Thermos (the "Nissan" model and more recently, the newer models with the white tops like the NS402 series). They set the standard in the market. I loved my Thermoses, but they kept breaking on me. I was going through a couple a year. They also only come in the 16 ounce size. I decided to try this Zojirushi as an alternative and because they come in both 16 ounce and this 12 ounce version. I love it! The thermal properties are great! This will still keep my coffee scary hot for hours and hours. The stats: 203 degree F water left in a room temp environment will still be 147 F after 6 hours. That's without the lid being opened at all, so real-world performance varies a bit, but this is still excellent performance for keeping coffee or tea hot. You can see the full details and specs on Zojirushi's website: [...]. They are much more transparent than Thermos. Thermos gives you a very vague "keeps hot/cold for X hours" spec, but only tells you what they mean by that (the actual performance metrics) on a sheet that comes in the box rather than anywhere you could find that info on their site or in their product description pages on Amazon. To be honest, the Thermos models do have technically better heat/cold retention on paper, but we are talking very marginal differences that don't matter much in the real world. Put boiling water in this mug, come back to it 4 hours later and it is still hot enough to scald you. If you need better than that, then Thermos makes some even heavier duty models, but they aren't designed to be sipped from. Like the Thermos models I had, this is a flip-and-sip design. The lid flips open with the push of a button and makes for easy sipping. This action minimizes the air exposure (ie heat loss) when you take a sip as opposed to the kind where you have to actually remove the whole lid to get at your drink. The Zojirushi lid, however, is much better-designed than the Thermos mugs.The sip hole is better shaped and sized for a smoother pour and smoother sip. It also feels more durable, opens more smoothly, and easily comes apart for easy cleaning, including all the rubber pieces (very nice). Much better than the Thermos offerings. The lid has a locking mechanism in the way of slick switch that slides side to side, locking the lid so that it doesn't flip open accidentally. The Thermos mugs only have a metal clip that swings over to latch the lid in place (and which can easily come loose and be not so easy to disengage when you are in a rush. I love that the Zojirushi mugs come in both 16 ounce and 12 ounce. I got the 12 ounce for two reasons. First, to encourage me to drink less coffee (I drink 1-2 cups per day, so that's 12-24 ounces a day as opposed to 16-32 ounces a day). Second, because even though the 16 ounce Zojirushi has better thermal specs, that is simply due to the added mass of the liquid in the mug (more mass, equals more thermal inertia). If you don't fill your 16 ounce mug all the way up, it will loose heat faster because there's more air in contact with the liquid. You get better real-world performance with a smaller mug, drank more quickly, than with a bigger mug where that last half is getting 8 ounces of fresh air mixed into it with every sip. Yes, I've put a lot of thought into this. This also probably (partially) explains the better on-paper performance metrics of the Thermos mugs (they only have 16 ounce). OK, enough thermodynamics. Another thing I love about the Zojirushi is options: not only can you get multiple sizes, but there are two version of this model mug, one with a "non stick coating" that is supposed to minimize clean up (KB), and this model here that does not have the non-stick coating and instead has a highly polished stainless ("Slick Steel") interior (KHE). Now, I don't know what the nonstick coating actually is, but I try to avoid anything with PTFE (Teflon) and generally try to avoid substances I don't know and trust in things I eat/drink out of. So, I chose this KHE model because I trust plain old stainless steel much more and don't feel like I need a nonstick coating in my drink bottle. I'm glad Zojirushi gives us the choice, although it does make picking out a drink bottle a little more confusing to the consumer. I advise you check out their website to find the model that best suits your needs, they have a very nice comparison feature! Aside from this model/style mug, they have a variety of other designs. Some have built in tea-strainers and other cool features if you are interested. Conclusion: expensive mug, but worth every penny. This is, I am convinced, the best coffee-drinking apparatus on the market. I'm super-happy with my purchase and I plan to get a second (backup) mug, maybe a larger one for the occasions where I do need it.

This, I call a thermos flask, is excellent and has lasted me for years, seriously. It's a good-quality build and hasn't leaked ever (so long as you don't cross-thread it, which I have done when in a rush). I use it daily for hot tea, working the 12-hour night shift at a hospital - I'm a nurse. What's also nice, compared to others I have, is that it just pops open using a button - you don't have to unscrew and rescrew anything; my tea stays piping hot for a long time, and the drinking spout prevents spilling - you just snap the lid, and it's closed again. It's also easy to clean - 5 stars for sure.

I bought the lavender pink and cherry (hot pink) colors. I've only had them a few days, so I don't know about the durability yet. However, I have tried them out a couple times already, and they seem pretty good. To test, I filled both with hot water, screwed on the caps, and used the locking mechanism. I shook both vigorously for several seconds. No leaks. I then put both in separate plastic tubs on their sides and left them for hours. I shook/rolled them a couple times. No drops on the outside of the mugs or in the bins. They passed that test! We took them out for a walk, and my kid managed to drop the lavender one not once, but twice. The first time nothing leaked. The second time, it went flying down the path, and there were some drops on the surface, but not a major burst. So, these mugs aren't 100% leak proof, but seems like they'll be okay as long as you're not flinging them across a field. As for heat retention, these are probably TOO good. I made tea and tried it an hour or two later in the cherry one, and it was still scalding hot. The next morning, it was still almost too hot! By afternoon, it was much cooler, but still drinkably warm. The lavender pink one seems to cool faster, but still retains heat for a long time. I think I'll have to budget time to let my drinks cool a bit before adding them to the mug if I actually want to be able to drink it that day (or plan to transfer to a cup when I get where I'm going). I didn't have issues with the spout/latch mechanism while drinking like others reported. Maybe it depends on your face/chin shape? Now, the thing that has already caused some grief and made me take away a star: CLEANING IS A PAIN. The lid has so many nooks and crannies, a rubber seal, and two separate ring gaskets that need to be removed. You're going to need one of those little straw cleaning brushes to get into everything and it takes forever for some of the cavities to fully dry. Maybe all these little nooks and pieces are what make it so leakproof, so it's unavoidable...but boy is it a pain. I did what I thought was a thorough scrubbing after my kid had hot chocolate in there, but after it dried, I found little parts I'd missed. If you're going to use this for just tea and coffee, the leak resistance and insulation probably outweigh the cleaning hassle. However, if you're planning on having smoothies or other "messy" drinks, you have been warned.

A phenomenal thermos , light weight and perfect for smaller hands. Leak proof and keeps beverages warm all day.

Love this little guy. Keeps my coffee hot even when I have to leave it for hours. The mouth piece works well and cleaning it is super easy.

It really is the best travel mug. The lock is leak proof, the bottle keeps the heat for hours. We've had a few of them over the years and always repurchase (once one gets worn out or lost!). This is a small size, but it is perfect for having a bit of tea or coffee on the go.

I was sure I had been delivered the wrong size mug when it arrived, as it seemed so small. A quick fluid measure however proved that the size is deceptive and hold exactly what is advertised. As far as functionality goes, this mug is so nice to drink from with the spout design, easy to seal, small and easy to hold and keeps my coffee hot for ages. I've been called away as I often am in my job and not returned to my coffee for hours and find it piping hot as I left it. I purchased this mug based on an overwhelming amount of positive reviews and I'm only too happy to add mine to the list. Buy one! You will not be disappointed.

Eu amei a garrafinha! Coloquei água quente as 10h pra testar, durou bem quente por mtas horas, as 14h ainda estava quente. As 19h morno. Excelente! E não vaza Só não gostei da tampa desencaixar toda pra lavar

Snygg men håller inte värmen lika bra som sina föregångare. Helt ok.

Las bebidas están calientes incluso despues de 8h! Despues de 2-3h casi como lo has preparado. Es diseño muy durable. la única desventaja: un poco dificil limpiar la parte donde se bebe.