Discover LOZAEVE 17mm silicone flange inserts designed for Spectra S1 S2 and Medela Harmony breast pumps. These inserts reduce the nipple tunnel size for enhanced comfort and optimal milk expression ideal for mothers with smaller nipples using larger breast shields.LOZAEVE 17mm inserts to compatible with Willow / Momcozy / TSRETE / Rainyb / NCVI / Balla-baby MiniO Pocket / Maymom / Spectra S1 S2 / Medela (PersonalFit Flex Freestyle Harmony Sonata and Swing Maxi) 24mm breast shields. It will reduce the 24mm shield nipple tunnel down to 17mm. Also compatible with some 25mm cups (Freemie).Seamless Compatibility For Optimal Milk Expression: Suitable for nipple diameter 14-16mm(after a pumping session) or measure the circumference of nipple base about 37.68 - 43.96mm before a pumping session.G.
