THERMOS Stainless King Vacuum-Insulated 16oz Travel Tumbler - Leakproof Coffee Mug with Handle, Midnight Blue - Perfect for Commuting, Camping & Office Use

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!!My old thermos travel mug had finally met its end of carefree use so ordered this one. First thing I noticed was the rim of the mug didn't bump into the bridge of my nose every sip! It keeps my coffee hot for as long as it takes me to finish it and my iced tea cold until the next fill. I haven't tried to do a "how long" test as what for ... it works great for both my hot and cold beverages. The order was delivered a day early from the promised date.All I gotta say is I gave a 4 star on the easy to hold because, I have small hands and the Thermos is a wee bit on the smooth, slippery side. BUT, these are the best for the purpose they’re made for. This cup keeps my coffee hot. Nothing like cold coffee. Yes, they’re a bit pricey, but you pay for the best and that’s what you get. I clean mine daily. I take apart the cover and clean it. I wipe the inside of the cup. You can also purchase replacement rubber parts that actually work and fit like OEM. Bottom line, the best in class. I recommend.I recently found myself needing to replace my trusty-but-uncleanable Es buen producto. Simplemente a uno no le gusta encontrarse con que a veces paga el doble o triple del precio. Sí, aquí hay buenas ofertas, pero no creas que siempre las mejores. Ojalá no restrinjan mi comentario para ayudar a otros a ser mejores consumidores, porque esto genera una relación ganar-ganar entre el proveedor y el consumidor.Happy with it so far. Had it a few weeks and used it at work. I make a decent brew before work and its still piping hot 4/5 hours later. Takes just under 2 mugs full. The only down side i would say is it feels a bit chunky in the mouth.I use this when travelling and in the office as it saves many wasted hot drinks. It keeps the drink hot for quite a while and it looks great too. I would certainly recommend this.very good worth the moneyThe king thermos is the best there is, have no doubt. Leak proof, stays hot for hours. I've just replaced my last one, which I've had for almost 5 years and using every week.. it lasts that long.