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

As far as I am concerned this is the best "thermos" jug out there! It is sturdy and holds the liquid hot or cold almost for the entire day. Mine has been dropped, fallen out of my moving ATV, rolled down a hill, and Lord knows what else and it still works just fine. It is easy to hold and it is probably the most dependable item I own!I love the top because it does not leak and I can slide the opening strip back with one finger. It is a plain, but highly functional design and well worth the money.

Nice thermos. Keeps drinks hot or cold and it is leak-proof. I took it with me to Europe and could safely put it in my totebag with cold water and not worry about leaking. I would say that it is a bit of a chore to clean, having to remove the gaskets, but it is worth it.

this mug is all you'll ever need. It keeps liquids at their temperature for a long time. No dripping no spilling. A great mug. I lost my old one and just replaced it with the same. Worth the money!

They definitely keep your drink hot for hours and they fit in all the cupholders. I do wish they had some grip or resistance on the side somewhere, just to make it easier to hold. They have slipped out of my hands many times. It's good quality though.

Very effective at keeping beverages cold. I haven’t tried it with hot liquids.

Keeps my coffee warm for over 8 hours. Easy to clean and takes a beating. Will buy more.

First I want to state that I am a huge fan of Thermos and their products. I use this travel mug primarily for coffee and it keeps the coffee hot as advertised. The problem is with the disk that is used to "seal" the mug and keep it from spilling when the lid is closed. Twice in the past I have had a "spill" event which I would compare to when you are drinking a cold beverage with ice and the ice momentarily creates a dam that prevents the beverage from passing by until the cup is raised high enough and the ice and beverage become free and splashes out. The difference between an ice dam and this mug is that hot coffee burns. Each time when I opened the mug, I found the sealing disk floating down in the coffee. I had previously just attributed this to operator error.Today it happened again and I now have figured out why. The disk rotates and "clicks" into place, however the "click" is just barely noticeable and does not provide much resistance. The problem occurs when you remove (unscrew) the top with the lid open. The disk must catch on the side of the mug just enough that it unscrews the disk enough that it is no longer locked in place. The lid can be removed without the disk falling but then when the lid is screwed back on it is now loose. Sometimes I will unscrew the lid until the threads catch in order not to cross thread which can only make the problem worse. The next problem is that the mug appears to function correctly which gets your guard down. The disk will float on top of the coffee until enough is gone that the disk floats down to where the mug interior diameter is smaller. This is when the disk will catch on the sides, which prevents the coffee from flowing, resulting in tipping the mug higher until the full weight of the coffee is enough to overcome the disk and hot coffee spills out on your mouth, face, shirt and in my case my laptop keyboard.I was able to easy reproduce the problem:1. Open the lid for drinking2. Unscrew the top3. With the lid still open, screw the lid back on (even worse, unscrew to catch the first thread)4. With the lid fully seated, tap the mug on a counter or other surface5. Open the lid back up to find the disk still in the mugThis problem appears to occur less frequently if you re-tighten the disk after you remove the top or if you correctly assemble the disk after cleaning on first use. So for me, it mostly occurs when I am having a second cup.I have owned 2 different mugs made by Thermos and each of those had a plastic o-ring locking piece that was used to lock the spill disk in place (2 piece design). At first I thought that this new design was better since it was much "easier" to remove the disk. However, I don't think that this design was fully thought through since it is now too "easy" for the disk to become unlocked.I bought this product based on my positive experiences with the 2 previous mugs with the old design, however I can not recommend this product until there is a correction for this issue.Just remember that you have been warned...

The thermos travel mug is excellent. It kept my coffee hot for such a long time. I think about 3 to 4 hours. Best choice ever. Other hot cups doesn't hold heat that long. Without the handle it's easy to travel in my hand bag. And it doesn't leak. Perfect!