The maximum volume of the Yummy Bag is 230ml / 8 fl oz. You can check the volume via the transparent measure on the back of the Yummy Bag. The volume measurements indicate volume when bag is standing and opened.
The Yummy Bag is made from flexible silicone and will expand with the liquid during the freezing process. So you can fill your Yummy Bag to the brim without worrying about any spills in your freezer.