Why choose Momcozy Wearable Breast Pump Flange Inserts? Momcozy Flange Inserts 17/19/21mm are designed for use with Momcozy S9 Pro/S12 Pro. It can sometimes be difficult to know what size flange insert you are. Your flange size has nothing to do with your breast size, you can use the picture guide on the link to measure the best flange size for you, which can help you improve the efficiency and comfort of breastfeeding. Some mothers experience nipple swelling while expressing, so it is important to observe the appearance of the nipple during pumping. The size of the flange is very important for comfortable and efficient pumping. Your nipples should not rub or feel squeezed in the flange channel when expressing. All your nipples should fit in the flange channel and be free to go in and out. If you experience any discomfort while pumping, you may not be using the right size flange and need to replace it with a new size flange. Some moms may need a different flange size on each breast, which can change over time. Therefore, it is recommended that you make a selection after accurate measurements to confirm the correct flange size. If there is any problem during use, please contact us in time, and we will provide you with different liberation solutions as soon as possible to help you solve the problem, thank you.

Easy cleaning, wash Momcozy S9 Pro/S12 Pro pump parts after each use with warm soapy water and rinse well. Please use boiling water/steam, with a temperature of around 100°C (212°F). The size of the flange insert is very important for comfortable and efficient pumping. Some moms experience nipple swelling while expressing, so it is advisable to observe the appearance of the nipple during pumping. If your nipple rubs or feels squeezed in the flange channel, it is an unsuitable flange size and you need to replace the right size flange insert. Made for moms, by moms. We've committed our lives to provide the best breast pumps, accessories, education, and customer care that we can, supporting every mother with the beauty of parenthood. Meeting moms pump wherever, without hassle needs. BPA-free, made of food-grade silicone material. All Momcozy pump parts that come in contact with breast milk are BPA-free, giving you peace of mind about your baby's milk. The authentic Momcozy wearable breast pump 17mm flange insert accessories are only suitable for use with Momcozy S9 Pro/S12 Pro wearable breast pump.