LOZAEVE 19mm silicone flange inserts are compatible with Spectra S1 S2 and various Medela breast shields. Designed to reduce 24mm shields to 19mm for small-nippled mothers. Achieve optimal comfort and milk expression with the right nipple tunnel fit.LOZAEVE 19mm 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 19mm. Also compatible with some 25mm cups (Freemie).Seamless Compatibility For Optimal Milk Expression: Suitable for nipple diameter 16-18mm(after a pumping session) or measure the circumference of nipple base about 43.96 - 50.24mm before a pumping session.Great solution fo.
