Custom sizing breast flange for output and comfort.
For the best milk output and comfort make sure you have the correct size flange. If pumping causes discomfort, even on a low suction setting, you may need a different breast flange or insert size. The LG/MED CustomFit Flanges provide moms with larger breast flanges. You can custom your flange size by using the special reducing inserts to create a smaller size for maximum pumping effectiveness. It comes with medium inserts 28.5 (2 of each).