I bought this for work/everyday use, and I'm quite pleased with it. Keeps drinks hot or cold, but one thing to note is on the pamphlet it came with it mentions it can only keep them hot/cold for 1–2 hours. I haven't given it a proper test or anything but I suppose thats accurate, although I've brought this into hotter than average places and its held its own against the heat for longer. Maybe I got lucky :D