THERMOS ALTA SERIES Stainless Steel Tumbler 18 Ounce, Espresso Black

Great gift
Bought this for my sisters boyfriend. He enjoys it that it keeps his drink hot for hours

Pretty Cool
Decent lil mug, keeps the coffee warm from morning till afternoon, good enough.The design however is truly terrible, they have overcomplicated the lid mechanism so to clean it you have to fully take off a rubber flap thingy, which coffee gets inside of, its reversable in there for…..no reason at all. just to create more failure points I guess. It did leak in my bag once so I must not have put that silicone on JUST RIGHT. I wont be returning it but I wont buy another unless they change the lid design.

WARNING – MAJOR DESIGN FLAW
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…

hot, hot, hot
I like hot black coffee. This thing keeps my coffee just that way all morning long.

This thing is completely useless. It leaks from the top when you fill it with water, and you can’t even carry it in your bag or anything.

The bad:The paint was chipped off towards the top of the metal tumbler (not the cap).The liquid from the tumbler doesn’t flow out smoothly so I often find myself using it without the lid.The goodA good thing is that the liquid doesn’t leak when upside down.