JIMOWANG 6pc Flange Inserts (17/19/21mm) for Momcozy S9 Pro & S9/S10/S12 Wearable Pumps

Enhance comfort and fit with JIMOWANG flange inserts

Finding the right shield size can influence how comfortable pumping sessions feel. This 6pc set delivers three common diameters—17mm, 19mm, and 21mm—each in two pieces, so you have flexible options to tailor the tunnel opening. Made from food-grade silicone, the inserts are soft, odorless, and BPA-free, designed to slide into most 24mm shields while preserving a gentle touch against the skin.

What you get and how it helps

• Two inserts per size: 17mm, 19mm, and 21mm for flexible session-to-session sizing.
• Broad compatibility with Momcozy S9/S9 Pro/S10/S12 wearables and many 24mm shields from other brands.
• Soft, odorless silicone that's easy to clean and designed for repeated use without harsh feel.

Fit, compatibility, and care

The inserts are compatible with a wide range of 24mm shields/flanges from brands like Medela, Spectra, and Lansinoh, making it easier to find a fit that works with your existing kit. They’re BPA-free and simple to clean, supporting regular upkeep between sessions.

Care is straightforward: rinse with mild soap and water, then air dry. For long-term comfort, consider replacing inserts every 1 to 2 months or sooner if wear or changes in fit are noticed. Observing how the nipple appearance shifts during pumping can guide your sizing choices.

Choosing the right size

Flange size can influence comfort and the pumping experience. If you notice internal pressure points, swelling, or discomfort, trying a different size within the 17/19/21mm range may help you find a better balance between fit and efficiency. This set helps you experiment without committing to a single size.