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

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.

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

It is nice to drink from and the size is perfect (for me).It is not quite as effective (in keeping my coffee hot) as the older NS100BK004 but it IS good.When you take it apart to clean it, it is tricky to put back together;if it leaks, it is not set correctly - be sure the white rubber thingy is snapped in place on both sidesbefore you tighten the big black thingy, and when you tighten the last piece, be sure the whitepiece stays in its proper place.Now it sounds complicated, but that's just because IT IS!But, these new fancy thermos things have a TALL lid to provide a big dead air spaceto make them effective.Not for everyone, but good if you like HOT COFFEE like I do.

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.

Easy to open top to drink from & keeps contents from spilling, too.

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.