THERMOS Stainless King Vacuum-Insulated Travel Tumbler, 16 Ounce, Matte Steel

Great Leak-proof Mug that Keeps Your Beverages Hot or Cold
I’m 67 years old and this is the best thermal mug I’ve ever owned! First off it’s made of a very solid steel and bullet-proof construction. You could stand on it on a sidewalk and it wouldn’t dent. More importantly I love my hot drinks HOT when I drink them and this mug meets the requirements!! As advertised, it keeps hot liquids hot over 4 hours. Granted it’s not as hot as when it first went in, but it is still HOT, not luke warm!! I haven’t used it for cold drinks, but I have no doubt that the insulation properties will work just as well at keeping things cold.I drive a Mini Cooper and the base of the mug fits perfectly into the console cup holder. The top of the mug which screws into the tumbler seals without leaks. You can turn your mug upside down in the closed position and not a drop will leak out! The lid has two openings from which to drink and there is a tab that is easily toggled to open and close the flow.The top contains several pieces that screw together and seat nicely for a solid leak-free seal. The top can be disassembled easily by a quick-turn of the plastic nut inside the mug which allows for separation of the open/close parts and the seal for periodic cleaning.I’ve seen some reviews stating that the top breaks. I haven’t had any problems in this regard. The only reason I can think of for that happening is that people are over-tightening the lid when screwing it onto the cup. It takes very little pressure to put the lid on and seal perfectly – no leaks. Just a light twist will do it. The lid is easily removed and disassembled by a quarter turn of the lock on the bottom of the lid allowing the periodic cleaning of the silicone gasket and open/close assembly.With the mug full of hot coffee, the lid on and switched into the “closed” setting, you can turn the mug upside down and it won’t leak a drop!!Great mug! I’ll probably buy another!!

No, these do NOT leak…IF you tweak just a smidge.
After owning my 16 oz THERMOS Brand travel Tumbler for almost 3 years, this one has passed the test of time. It still keeps my coffee hot at least 5 hrs later. To be fair, I should mention that I drink my coffee black, and fill with hot tape water first for just 1-2 minutes .But that is only when I want hot coffee 6 hrs later….I take a 2nd Thermos with me for after lunch.About the LIDS : Yes they do seal tight enough to not leak even a drop. BUT I do test it first. If it leaks, it just needs only a smidge more turning to be in the exact spot. ( and to put my reading glasses on first .. daah ) I am guessing that the reviews that say the lids leak, are not adjusting the lid a smidge more. It actually IS possible to see “closed” & yet still have a leak. Just test it, and tweak IF need be.My hope would be to make the lid have that ” click” sound when lid is closed tight rather than when opened. BUT that may not be possible, b/c that sound could be from releasing the vaccume seal. Oh well.2 family members have borrowed my mug for longer day trips. Plus 1 friend borrowed my mug for 7 hrs of deliveries in the winter in New England. ALL have remarked how hot the coffee stayed. So they are each getting their own for upcoming birthdays & Christmas gifts. Maybe 2 in different colors, so the spouse that leves the house 2nd can still have her mug..LOL

This thermos tumbler is amazing! It keeps my coffee hot for hours and my cold drinks chilled all day. The build quality is excellent, with a sturdy, leak-proof lid that prevents spills. It’s the perfect size for travel, work, or everyday use, and the insulation works better than expected. Plus, the sleek design looks great! Highly recommend for anyone who wants a reliable tumbler for on-the-go use.

Only problem letters are not visible on the lidAlso hard to open, when tight…Else good quality…

Super 👌 👍 😍