It is lovely to have a bowl to mix up a quick batch in the kitchen, not so much to store it. We have to choose to have the right size for all occasions(which takes up so much space), or choosing the biggest size we would need (which can be a hassel if you have to mix dry and wet seperately). With this set, you can keep the storage to one bowl but have the option to choose the right size bowl that you need, or if you need more than one batter bowl at a time. The largest bowl is 11.5-12" and the smallest 3.5". This set is dishwasher, microwave and oven safe!