Hydro Flask All Around Tumbler 473ml (16 oz)

Leaks water, coffee etc from the lid opening. Keeps the drink cold and size is good but leaking prevents care free usage.

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The best Mug so far and keeps the drink warm for a long time. I had to buy another similar (in a nicer color) mug, when the first time only black ones were available (the manufacturer would have a lot of beautiful colors, note), and I had to take something from the shelf right away. I passed on the black mug.

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Works well as a coffee cup on trips. Keeps cold cold and hot hot. The lid is not waterproof, so if the mug falls over, there will be cleaning.

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Smooth surface, so it's good to drink both with and without the lid, because there are no threads (the lid stays on with the friction of the rubber seals). The lid's drinking opening is not completely sealed, but mainly prevents spilling when holding it in the hand or in the car's cup holder, but when tipped/poured, liquids do come out, even if the drinking opening is closed. The drink won't stay warm forever, but a nice plus of the thermos mug is that the outside of the cup stays cool and doesn't burn the buttons.

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The drink stays warm for a long time. Also works in hot weather with cold water.

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Very good. Smooth edge, good to drink from, because there are no threads (the lid is held by the friction of the seals). In the car, the cover helps against spills, but I wouldn't guarantee that it will stay closed if it falls/drops.