IVARONAL 8pcs Flange Insert 19mm – Compatible with Momcozy, Spectra, Medela & More

Comfort-first flange inserts for 24mm wearables

Experience a more tailored pumping session with the IVARONAL 8pcs Flange Insert in 19mm. This silicone sizing kit is designed to adapt to a variety of wearable and bottle-ready pumps, helping you move from a generic shield to a fit that feels natural. The inserts work with many popular models and brands, including Momcozy, Spectra, Medela, eufy, Lansinoh, and Elvie. The 19mm size acts as a focal reference in a comprehensive size range so you can dial in the best fit for your body today.

Broad compatibility and a customized fit

Compatibility is a core feature. The inserts are designed to fit a wide array of mainstream pumps, including Momcozy Air1/W1/M9/M6/M5/S12 Pro and V1 Pro/V2 Pro, as well as Spectra, Medela, Elvie, and more. If you’ve used different pumps, this kit can help you converge toward a comfortable, snug seal that feels close to your skin, without the tension that often accompanies a mismatched shield.

• Addresses the 24mm wearable shield by providing a mid-range 19mm option for a better seal
• Designed to support comfortable pumping sessions with a soft silicone texture

Size range, comfort, and safety

The inserts come in a range of sizes to support your changing needs across the breastfeeding journey. The soft silicone is food-grade and BPA-free, offering a gentle touch that reduces friction against delicate skin. The close-fitting design aims to promote efficient milk expression while keeping you comfortable through longer sessions.

• Multi-size set including options from 13mm up to 22mm, with a 19mm reference
• Soft, skin-friendly silicone that’s gentle on the body

Care, hygiene, and maintenance

Easy care helps you keep pumping gear clean and ready. The inserts can be sterilized using steam, boiling water, or microwave steam bags. After use, wash with mild soap and warm water. To maintain peak performance, replace them approximately every two months.

Real life use and benefits

Whether you swap between pumps at home, work, or on the go, these inserts offer a practical way to customize fit without buying a new shield for each model. While individual results vary, many users report more comfortable sessions and a simpler path to finding the right seal with a range of pumps.