I take one of these to work with me every day full of my favorite iced tea. They don't stay quite as cold or keep the ice quite as long as their smaller counterparts, which I am sure is something scientific, but they are still a great buy. My only issue with them is my small and weak hands can make them a little challenging to open and close properly, but I have always managed to work it out. It's a lot of liquid, and it keeps things cool if not cold.
Rating: [4 of 5 Stars!]