Flange Inserts 16PCS 15/16/17/18/19/20/21/22mm for 24mm Pumps, Flange Sizing Kit Compatible with Medela Elvie Lansinoh Spectra Momcozy Breast Pump Accessories, Breastfeeding Essentials Kit for New Mom

【Compatibility】Mompmuir flange inserts(15/16/17/18/19/20/21/22mm, 16pcs) are suitable for most 24-25mm breast pumps, it will reduce the 24-25mm shield nipple tunnel down to correct size. It compatible with Medela / Freestyle / Swing Maxi / Harmony, Spectra S2 / S1, Momcozy S9 / S10 / S12 Pro / M5 / M6 / M9, Elvie / Elvie Stride, Lansinoh, Wi-llow / Wi-llow Go, eufy S1, Paruu, NCVI, kmaier, TSRETE, MOMMED, Bellababy , Motif Luna, Amade- MYA etc. Note: Not compatible with 27-28mm shields. 【Major function】Achieve enhanced breast pumping, reduce pumping time, and maximize milk production by using the essential flange inserts for your breast pump. Except with the added benefits of stimulate milk flow and increased milk output, the comfortable and soft silicone material is designed to increase comfort and reduce pain during use. Our flange inserts are a must-have for any breastfeeding mother needing to pump milk. 【Convenience】With our silicone flange inserts, you receive a free nipple measurement card to help you choose the perfect size. Compare the size of your nipple before and after pumping to ensure the most comfortable and effective fit. By testing, it was found that every 1 millimeter of error will affect about 10% of the milk output, so it's important to monitor the appearance size of the nipple during pumping. 【Multiple Size Options】If you're aware of your exact nipple size, we recommend purchasing the corresponding size directly. However, if you're unsure, we suggest starting with our 16-pack of Flange Inserts, which contains 8 different sizes to ensure you find the perfect fit. Nipple size can vary throughout different breastfeeding stages, requiring different sizes of flange inserts for your breast pump. 【Safety & Easy to clean】Ensure safety and maximize the performance of your breast pumping. Made of transparent food grade silicone material, BPA-free. Easy to clean before use it can be sanitized with water steam, boiling water or microwave-steam bags. It is recommended to replace the flange inserts every 1 to 2 months. Plus, receive a complimentary cleaning brush for added convenience.