How much volume can the clouds of the Yummy Tray hold?

Each cloud-shaped compartment has a small marking on the inside that indicates a 30 ml (1 fl oz) volume. For best results and to avoid leaks, please fill only up to this marking. The maximum volume of the tray is 270 ml (9 fl oz), distributed across 9 compartments. However, it is not always that simple. Please note that the markings on baby bottles, disposable milk storage bags and our products do not always match 100%. Even filling to the mark can give a difference of 5 ml, depending on how someone interprets it. So although the Yummy Trays are designed and tested for 30 ml, there is still a 5 ml margin of error.