This is a first, so I'm glad to be reviewing this product which makes it easy. I have tested (and yes, bought-just ask my wife) well over a dozen various insulated containers for use in the car. No I'm not one of those people who walk around constantly drinking (or hydrating). I use it almost exclusively in my car. It's simple, I want the liquid to stay hot, I want to be able to operate it with one hand, and I don't want it to spill or leak. This is the only product that does that and it does it well. I have given it as a gift to at least a half dozen people and since they are relatives there's no more critical an audience. They agree. Enough said. 5 stars

I got this mug because I wanted to carry my coffee in my briefcase without it leaking while at the same time I wanted to be able to take a quick sip. I've had this mug for several years now, and it has worked perfectly. It keeps the coffee hot for a long time, it has never leaked, and it is simple to pop open the lid and take a quick sip.

A regular thermos is leak-proof and keeps the coffee hot for a long time, but to take a drink you have to unscrew two lids and pour out some coffee. I'd hate to try pouring on the bus or train during my morning commute! When considering this mug, I went around to various stores to see what was available, and this was the only one that so nicely combined the properties of a thermos with those of an easy-to-drink mug. Starbucks, for example, offered a mug that was probably almost leakproof, but I did not want to perform this experiment in my briefcase next to my lap top! 5 stars

Forgive me for being blunt, but this mug is in no way friendly to drinking your joe on a commute to work. In fact, I can't see it being useful as a "backpack" bottle, unless you're carrying a shot of something really fancy, because it just doesn't hold much of anything. But I digress.

The lid on this thing is ridiculous. It is a hinged pop-top, like what you'd find on a breadmaker, and it's nearly 2 inches thick. I'm a small girl, and I can hardly fit my face into the tiny, deeply recessed drinking trough; my nose bumps against the dang top contraption. If you're sitting on a bus, you have to open and close this thing every time you want a sip, which means flipping the little metal lock off, pushing the button, and spronging the top open. When the top is open, the whole cap of the thing is 5.5 inches across. If you were driving in your car and wanted to sip your coffee, you'd have to pull over, because you cannot see around the breadmaker top. Funny too, it boasts the canister is shaped to fit the average vehicle's cup-holder, but they neglected to mention that it likely would not (or would probably tip itself over) with the top open. Talk about top-heavy.

I would not have bought this mug had there been photos of it with the top open. I'll post some of my own.

-disgruntled.
1 star

I've been using this bottle for years. This time I bought 4 of them, two for me and two for co-workers. Mine is a replacement for one lost plus a backup. As a professional driver it's handy to have a spill-proof container for hot coffee that can be handled with one hand. A button press flips the spring loaded lid back revealing a perfectly shaped sipping lip. It's easy to flip the gasket lined lid back with a flick of your finger thus sealing the bottle against leaks.

Did I mention that the double walled insulated body keeps hot liquids hot and cold liquids cold for hours while keeping the outside comfortable to hold. 5 stars

Nissan JMW500SBK Leak-Proof Backpack Bottle 16-oz.

This was the best $25 bucks I've ever spent! Keeps coffee hot from 6am until 2pm when I drink it at work in the afternoon. The only leakage was operator error - either overfill or didn't have the lid on tight enough. I highly reccommend this thermos. 5 stars