Size Chart - S9 Pro

Nipple measurement Flange 11-13mm 15mm Insert 14-15mm 17mm Insert 16-17mm 19mm Insert 18-20mm 21mm Insert 21-23mm 24mm Flange 24-26mm 27mm Flange   We have such a guide exclusively to solve this problem of moms, you can check the guide on   how to measure your flange size . Please note, your breast size may change before pumping and after pumping, so please measure your size when you start pumping or the flange size may not be appropriate for you. Find the 27mm flange   here Find the 15mm/17mm/19mm/21mm inserts   here