During the winter it’s nice to have a hot cup of coffee or two after a long drive. Most of my thermos bottles are fairly large (for soups) and to serve more than one person. Travel mugs rarely keep my drink warm enough over the course of a couple of hours.
Its size is just large enough for me to have 2 cups of coffee and it keeps my coffee hot for at least 4 hours. To make sure that your drink is hot upon arrival you will want to fill it with hot water before you fill it with your favorite beverage.
This is a double-walled, unbreakable, stainless steel thermos with a leak-proof (at least so far so good) lid. There are two silicone seals on the lid. One is to allow you to unscrew the lid enough to let liquid pass and the other is the main seal. You do want to be careful and not damage (by cross-threading) or lose these as it would render the thermos useless. Also, when you open it for drinking you don’t want to open it beyond the point where liquid starts to come out or you end up with a full-on spill.
The best features are its size, handle, durability and ability to keep my coffee hot. On the downside are that the base is too large for any cup holders and the area that you drink from isn’t covered (you don’t want to let this roll around on the ground or let the dog have at it). Also, the mouth of the thermos and the non-spill lid aren’t designed to allow anything but liquids to pass so soup is a no-go.
The carabiner that they include for attaching to a backpack is pretty flimsy and I wouldn’t use it for that purpose. I do use it to secure the thermos to other items in my vehicle so that it doesn’t roll around.
As much as I like this thermos I can’t recommend its use while driving unless someone else opens the lid for you. I like it though as for me it is for use upon arrival.