LOZAEVE 21mm Silicone Flange Inserts Compatible with for Spectra S1, S2 & Medela, PersonalFit Flex, Harmony, Freestyle, Swing Maxi Breast Pump Shields/Cups; Reduce 24mm Tunnel Down to 21mm, 2pc/Each

BULLET POINTS : 1 > LOZAEVE 21mm inserts to compatible with Willow / Momcozy / TSRETE / Rainyb / NCVI / Bellababy 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 21mm. Also compatible with some 25mm cups (Freemie) 2 > Seamless Compatibility For Optimal Milk Expression: Suitable for nipple diameter 18-20mm(after a pumping session), or measure the circumference of nipple base about 50.24 - 56.52mm before a pumping session 3 > Great solution for small-nippled mothers using large breast shields, Proper nipple tunnel fit is essential for comfort and efficient milk output 4 > BPA free, made of silicone material. Durable, clear, and comfortable. This accessory helps breast shields for more effective pumping and maximized milk expression while helping to avoid nipple trauma or irritation 5 > Maintain compatibility with most handsfree bra. You can use most handsfree bra cups with they original 24/25mm detachable shields having this insert inside. During operation, you need to squeeze slightly to make the Insert fully fit with the shield to achieve the perfect effect DESCRIPTION : LOZAEVE 21mm Silicone Flange Inserts Compatible with for Spectra S1, S2 & Medela, PersonalFit Flex, Harmony, Freestyle, Swing Maxi Breast Pump Shields/Cups; Reduce 24mm Tunnel Down to 21mm, 2pc/Each