Hydro Flask - All Around Tumbler 355 ml (12 oz) with Closable Spill Proof Press-In Lid - Stainless Steel Double Wall Vacuum Insulated Travel Mug

I use this at work just to keep myself always drinking hot tea and it keeps the temperature well. I also tried it on cold drinks and it held pretty good. They're pretty wide in size so if you have small hands, it may be hard to hold with one hand (maybe), but I'm just letting you know as a guy, washing these are easy cause your hands will fit inside and you won't need those sponge on a stick. Only thing I do wish is they made the lid a little more disassemble-able for cleaning cause I'm pretty sure below the slide lid, grime will accumulate over time... I'll probably just soak it in bleach and hot water it down.Definitely something easy to solve and handle so it's nothing worth docking stars as a whole product.About the leakproof, it does it's job and I really don't understand how people complain it's leaking out of the airflow hole... If that airflow hole doesn't exist, you'll be complaining how this tumbler is so hard to drink out of when it's full. The only other place it may leak is the mouth hole itself (even with the lid on), but if you react fast enough to a fall over, the liquid that leaks through is minimal.

This cup is great holding hot beverages and cold but the only thing I don’t like is the lid.

This was an expensive coffee mug, but it does keep it warm for hours. The lid has a sliding closure but it is not leak proof so be careful. It would have been nice if this came with a rubber boot. I had to spend another $8 to buy one that almost fits perfectly (a tad big and can be easily pulled off. Overall, a nice, but pricey tumbler.

Perfect size and keeps my coffee hot

Got hubby for Xmas awesome coffee cup great size not to small or big