THERMOS Stainless King Vacuum-Insulated Travel Tumbler, 16 Ounce, Midnight Blue

Great insulation! Use it every day to keep iced water cold and ice cubes survive throughout the day. I have used it overnight and ice cubes have not melted the following morning. It also keeps my tea and coffee warm. After 2 years of using this travel mug, I have to say that it keeps liquids colder for a longer time than it keeps them hot.

I have purchased this brand of mug for years. Keeps my coffee warm for hours. You can drop it with the lid closed and it won't spill a drop. Everyone needs this mug if you travel.

I’ve had one like this for years and love it for how well it works. Easy to hold, doesn’t leak when closed, even when dropped or tipped over. Hot beverages stay hot for hours. I take it with me golfing in all weather.

Great cup. Coffee stays nice and hot for several hours.I don't use it for cold drinks, but I'm sure it works just as well. Sits in your hand comfortably. Nice weight. Fits perfectly in car cup holder since it has no handle.

I thought that this was the perfect coffee mug. It keeps coffee hot for hours, the lid is secure and the mug fits easily in the cup holder. But while most travel mugs have open and closed positions, this one rotates to open, closed, open closed, open, closed, etc. in both directions. Because of this feature, the user has to look at the lid while driving to determine if the “open” or the “close” position is showing. The writing is small and difficult to see and this leads to distracted driving. Combine this with stop and go, rush hour traffic and it spells trouble. Nice mug, otherwise.

Best coffee cup I've ever owned if you knock it over you don't lose a drop keeps coffee hot for about 8 hours

Love this mug. It keeps liquids cold and is leak proof. Everything I need.

This is the third Thermos travel mug of this type that I've owned over a period of time approaching two decades, and the fact that I continue to use one speaks volumes about my satisfaction with its design and performance. These mugs used to be available at a local department store but are no longer sold there so mail order is my only option for obtaining one—either that or finding another local store that carries them, and frankly that is more trouble than it's worth when they are readily available on Amazon.This mug keeps my coffee hot for several hours and drinkably warm for several more. I can always tell without having to look at it whether the lid is open or closed by running my index finger through the slot opposite the side I'm drinking from to determine the position of the locking lever, something that is especially helpful in the dark or when I'm driving. Another thing I like about the mug is the tapered bottom, which allows it to fit into smaller cupholders like those in my trusty 19 year old G35 coupe.The little care and use pamphlet found inside a new mug states that while it is nominally top rack dishwasher safe, hand washing is preferable. It also advises that liquids should not be allowed to remain in the mug for more than 24 hours and that the mug should be thoroughly dried after rinsing or cleaning. My experience is that the longevity of your mug will be greatly enhanced if you follow these recommendations.Because I drink my coffee black I have no problem with bacterial growth in the lid caused by traces of dairy or non-dairy milk/cream lingering in the crevices of the cover, and all I usually do to clean the lid is to rinse it under hot tap water. Every once in a while I do dismantle it to give it a thorough hand cleaning and as I have always been the Mr. Fix-it type—starting at the age of four when I drove my father crazy by taking apart flashlights to investigate how they worked—I actually enjoy doing this. (Unlike the flashlights I dismantled in my youth, I always put the lid back together again.)For those who complain about the lid retaining water after rinsing it or running it through the dishwasher, I have found that leaving the lid in the open position and turning it upside down while/after cleaning allows virtually all of the retained water to drain and evaporate.When new I have found that the lid's seal is tight as a drum, and as the mug gets older and the seals inevitably deteriorate I can handle a small dribble of coffee escaping from the lid if I knock it over. The only reason I bought a new one is because after years of use the dribbling has become a bit more problematic of late and because my old one is battered from having been dropped too often in workplace parking lots, something that is no longer a problem for me since I am five years retired. :o)