I picked this up on sale and was instantly attracted to the handle on top of the lid and it’s fairly small size. I have the option of easily throwing it in my bag (and not worrying about spillage at all) or carrying it around by the handle. The outside doesn’t heat up, even when the tea inside is boiling hot (which it remains for hours) so no burning your hands.
Only one complaint: the opening is on the small side. This is great for sipping but not so great for actually brewing tea. I had to go out and buy a tea ball because brewing my tea in something else and transferring it is too much work + too many dishes for me in the morning. This is really only a small complaint, because the tea ball does the trick.