Fresh thinking: ZWILLING Fresh & Save Bowls - the unique vacuum system for preparing, baking, serving and storing. The 12 cm bowl is ideal for delicious overnight oats, tapas, crumbles and more. Prepare directly in the bowl, heat in the oven or microwave and serve at the table. If you have any leftovers, simply vacuum seal them and store them in the fridge or freezer. Thanks to the lid, you can simply stack them - without aluminium foil and the like. Your food stays fresh up to five times longer in a vacuum. The vacuum lid is also compatible with the other 12 cm bowls in the range, whether glass or stainless steel. And the lid even fits on your handleless 12 cm bowls from STAUB CERAMIQUE.