Numom Breast Pump
ANTI BACKFLOW SPIRAL
Numom is designed to make mommies enjoy the comfort while pumping. Its safe to use anywhere.
No need to change any setting if you want to use it again for a second time. It will continue at where it stopped!
It comes with size 24mm and without the silicone part is 26mm. The flange also comes with bigger size which is 28mm and 30mm.
Refer Here : Size Guideline