Holey Box Balloon Sizer is a collapsible cube with seventeen various sized holes for measuring balloons. The box folds up completely flat, which is convenient for storing and travelling.

The Balloon Box has the following sized holes: 14", 12", 10.5", 9", 8.5", 7", 6", 5.5", 5", 4.5", 4", 3.5", 3", 2.75", 2.5", 2.25" and 2".