Concise 21mm Silicone Flange Inserts for Spectra, Elvie, Momcozy, TSRETE Breast Pumps

The Durceler 21mm inserts (2 pieces per pack) are compatible with a variety of breast pump brands, including Medela, Spectra, Elvie, Rainyb, S18 S21 S23, Momcozy S9 Pro S10 S12 Pro, TSRETE, FEISIKE, Bellababy MiniO, and NCVI. These inserts can reduce the size of 24mm breast shields down to 21mm, providing a more suitable fit for mothers with smaller nipple diameters. Additionally, they are compatible with Freemie 25mm cups, allowing users to reduce the cup size to 21mm.

The inserts are designed to provide seamless compatibility for optimal milk expression. They are suitable for nipple diameters ranging from 18-20mm (after a pumping session) or a nipple base circumference of approximately 50.24 - 56.52mm (before a pumping session). This makes them a great solution for small-nippled mothers who are using large breast shields, as proper nipple tunnel fit is essential for comfort and efficient milk output.

The Durceler 21mm inserts are compatible with a wide range of breast pump models, including Spectra and Medela (Freestyle, Harmony, Sonata, and Swing-Maxi pumps), as well as other brands. Crafted from BPA-free silicone material, these inserts are durable, clear, and comfortable to use. They help to provide more effective pumping and maximize milk expression while also helping to avoid nipple trauma or irritation.

Maintaining compatibility with most hands-free bras, these inserts can be used in conjunction with the original 24/25mm detachable shields. During operation, users may need to squeeze the insert slightly to ensure a perfect fit with the shield, achieving the desired effect.

In summary, the Durceler 21mm inserts offer a versatile and effective solution for mothers with smaller nipple sizes who are using larger breast shields. They are compatible with a wide range of breast pump models and brands, providing a seamless and comfortable pumping experience while helping to optimize milk expression and avoid nipple-related issues.

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