16oz Stainless King™ Coffee Mug

Very good at keeping coffee hot for hours. The top has been leakproof so far. There is a definite click when closing the slide lock top, so there's no doubt it's closed. At 3 1/2" OD, it is for sure designed as a desk mug, not a travel mug. It does not fit in a standard cupholder in a car--you would need a cupholder expander insert. OTOH, since it's a wide-mouth cylinder, it's very easy to clean. It took me a bit to figure out how to put the top on to make the drink opening end up where I want it. And you can't get the last few sips out of the mug without taking the top off.

My husband said it keeps his coffee hot, and if he switches to ice tea, it keeps his tea cold. He likes the size and handle. It's perfect! He said he wouldn't change a thing. It's great!

Haven't used it but had one for many years that I really love. Unfortunately, it served it's time. Thermos is usually an everlasting buy