Tupperware FridgeSmart Vertical

Tupperware FridgeSmart Containers use this special three-way venting system to help regulate the atmosphere inside the container by balancing the flow of oxygen coming in and carbon dioxide going out. ​ FridgeSmart Vertical container has a capacity of 3.4qt/3.2L I have (2) different coloured seals. (1) in light green(retired colour) and (1) in the current dark green colour.