THERMOS ALTA SERIES Stainless Steel Mug 18 Ounce, Matte Steel/Espresso Black

This cup has held up very well. After many months of daily use it still looks great. The lid always screws on so it ends up oriented the right way. Other cups have more than one set of threads and it can take several tries to end up with the lid pointing the right way. I really appreciate that. The lid flows well, so I have not needed to drill additional vent holes that other cups have needed. After many months of use, the cup has only leaked once when coffee grounds got in the seal area. The slider that opens the valve for drinking makes an excellent lever to help get the lid loose when it's time for a refill. Anyone with arthritis will appreciate that. There was only one concern. In recent weeks the handle had started getting loose. I like to hang the handle on my waist band to keep my hands free, so that may cause more than average wear and tear. I could not see any way to get access to see how to correct the problem. It felt like a loose screw was the culprit. Problem Solved! I drilled a 1/8" hole in the handle where shown in the photo and found a screw buried in silicone. It took about 1/4 turn and the handle is tight again. A 1/8" rubber plug will look fine and be easy to remove if/when that screw needs to be tightened again. The underside of the lid has lock and unlock symbols indicating how to give a 1/4 turn to unlock the seal and pull it off for cleaning. The seal piece removes and reinstalls easily if the slider on top is in the open position. I use a stiff bursh to occasionally remove coffee residue that can collect under there. I just purchased an identical replacement cup today that I will store in the cupboard until this one starts to look old. The 16 oz size works great for me and Thermos has a short/fat version that may work better for you if the tall style seems too "tippy" for you. The photo also shows the stick-on felt pad we put on the bottom of our cups so they don't clank when we set them on a table. Sticky back felt sheets can be found at craft stores.

This was the second of these I have had, my first suffered a crash that broke the vacuum seal, making it inefficient for holding temps. The overall quality has improved since my initial purchase several years ago with some minor improvements in the sealing components and desighn. I bought a duplicate replacement because the first had been so trouble free and efficient at keeping things hot or cold for many hours at a time. It is also simple to maintain, dishwasher safe, and easy to drink from and shut off the well designed lid. It seals very snugly, and the fact that the sliding opening/closing mechanism can double as a bit of good leverage for a good seal and easy take off is a bit of a bonus for cleaning, refilling. Like most Thermos products I have bought and used over my lifetime, it is reasonably priced, provides excellent service, and is very handy to use and carry.

Bought this as a replacement because my lid was lost during a recent move and this is my favorite mug! I’m disabled on crutches and require a lid to carry my coffee. This lid design is great and has served me well for 5 years. Keeps coffee hot for hours and so many clear plastic lids break and no longer seal, this design makes it practically impossible to break or leak. Just don’t lose your lid. Highly recommend this specific model as I’ve been using my first one 5 years.

We bought this in 2022 and the handle began to come loose this year. wondering if there is a warranty on them? Good for heat and good seal.

keeps hot stuff hot for longer than most other cups I have used. The top breaks down easily for cleaning.

I am replacing a 10+ year-old Thermos coffee mug. I waited so long because the old one was still working and leak proof. This is a new redesign of the old version. This is just as leakproof, and the new slide mechanism makes it easier to see if the mug is open.

I like the open handle so I can hang the cup from my pocket. Doesn't leak. Keeps stuff hot. I hope it's still in production when I need to buy a replacement.

I bought the white version of this cup at target and I absolutely love it. The only problem with the white mug is that it’s getting dingy even though I put it in the dishwasher religiously it’s just getting a little old looking and showing some staining. So when I realized there was a black one on Amazon, I was thrilled so I bought it. Unfortunately it just doesn’t keep the drink hot. The black one has a different lid design and I can only speculate that this is the reason why the black one doesn’t keep the drinks hot at all and the white one is piping hot. With the white mug, I was able to leave this mug in the car for hours on a cold day and it would still be piping hot. I would routinely go to the gym and before I left, I would prepare my hot tea and leave it in the car for the duration of my work out so that when I got out of the gym, I would go to my car and my hot tea will be waiting for me. I drive a lot so many cases I’m in an out of the car, sipping my tea over several hours with it remaining had the whole time . With the white mug, the tea was super hot. There were times I would have to leave the drinks about open to let the heat escape to cool it down so I could drink. For the black mug I can’t even use it at home without it cooling down very quickly before I finish the drink. These two mugs are seriously night and day. I even wonder if the mug I got is defective because it’s doing such a poor job of keeping the drink hot. I can’t imagine that this is how it’s really supposed to work. Other than the fact that it doesn’t keep your drink, hot at all I do love the design of the mug, and I actually prefer the design of the lid from a taking apart and cleaning perspective to the old design, but clearly if it doesn’t keep the drink hot, then it’s pointless. So I’m bummed that it didn’t work out and I wish I knew if it was defective or just a bad design because I really would like this mug to work.