Very good for office, with satisfactory insulation.

However, it requires attention:

a) do not put it in the dishwasher
b) do not put metallic objects (e.g. metal straw, etc.) or spoons, etc. in the sink. Its interior is relatively sensitive and breaks easily, so it needs a little care.

Also, it has a sensitive spot on the bottom (a small closed hole) that opens relatively easily. If it opens, water leaks into the interior, which is a bit inconvenient to empty afterwards.

Its positives are the very good capacity and insulation it has.

Its negatives are that it breaks relatively easily.