I love that I can store so many different things in this in different temperatures. It is great for soups and stocks and doesn't leak.  I've frozen things and use it in the microwave and the glass has held up.  The only con is that it is much heavier than regular plastic storage solutions, so a lot of these in a lunch bag would make it heavy. But it is very sturdy and definitely big enough for a lunch. [This review was collected as part of a promotion.]