From art to preserve a lemon

Let's start with what is good about the set: The glass is very stable, the lid can be put on easily. And do in the dishwasher due to the high quality, good closure, the possibility of both lid and glass, I would normally be awarded five stars. Why I do not do it, is the images that I uploaded, significantly.
The company advertises that you can do these bowls in the oven. This works out. But only for a single, which is on a diet. In order to make clear once again how small is the smallest of the bowls, I have only photographed with a normal organic egg and then with half a lemon. Even the organic egg was too big. Sure, I could prepare a very small dessert in this bowl and then watch how my husband is watching ... I might just as well keep a half a lemon in it. However, I wonder why I have to keep half a lemon in a glass bowl Diamond ... Well, it stays fresh. Two tomatoes were already too large for the medium bowl and the "biggest" bowl (one could bake a chicken leg in it or a small potato casserole) failed in the shelf-life of cheese and beans. See Image.
The two points are deducted there, because the set is easily fail constructed in terms of size. A reasonable bowl in which you can accommodate something the same price and with the same amount of glass ... and the same closure, as three small, largely useless Winzdinger. Good idea with the quality, botch in the implementation.