IVARONAL Flange Insert 21mm 2-Pack – Wide Compatibility with Momcozy, Spectra, Medela & 24mm Shields

Overview

Discover the IVARONAL Flange Insert 21mm, a compact 2-pack designed to expand your pumping options. These inserts are built for compatibility with Momcozy M9/M6/M5 wearable pumps and Momcozy V1 Pro / V2 Pro, as well as many 24mm Shields/Flanges from top brands like Spectra, Medela, Elvie, NCVI, TSRETE, eufy, Lansinoh, Paruu, and MomMed. The result is a flexible solution that adapts to different setups, helping you find a comfortable fit across brands without needing a full pump change.

The inserts are crafted from food-grade silicone that is BPA-free, offering a soft-touch feel against the skin. The 21mm diameter is a versatile choice for many users, and the kit includes a full range of sizes (13–22mm) to help you fine-tune the fit as your needs evolve through different breastfeeding stages.

Key benefits at a glance

• Broad compatibility with Momcozy models and many 24mm shields from major brands
• 10 size options (13–22mm) to help you dial in a comfortable, efficient fit
• Soft silicone, BPA-free composition for a gentle, snug feel during pumping
• Easy to clean and sanitize using steam, boiling water, or microwave bags
• Two inserts per package for convenience and quick replacements

What you get and how it helps

Each package contains two 21mm flange inserts, designed to work with a wide array of shields and flanges. The soft, skin-friendly material provides a snug seal that many users find comfortable over longer pumping sessions. While outcomes vary, selecting the right size can help reduce irritation and support a stable pumping rhythm.

Think of this kit as a flexible upgrade for busy moms who juggle multiple pumps or brands. Whether you’re at home, at work, or traveling, the ability to swap to the 21mm insert or explore other sizes in the set can make a noticeable difference in daily pumping routines.

Care, maintenance, and durability

• Made from food-grade silicone and BPA-free for peace of mind
• Simply wash after use; sanitize via steam, boiling water, or microwave steam bags
• Replace every 2 months to maintain optimal performance and hygiene

Size guidance and usage tips

Start with the 21mm insert as a baseline and consider expanding to 13–22mm options to time your changes with your breastfeeding journey. A proper fit supports comfort and can help you maintain a steady pumping routine even during busy days.