Silicone Breast Flange Insert 13–24mm | Pump Reducer Adapter

Make every pumping session more comfortable and efficient with this soft silicone breast flange insert reducer. Designed to fit inside standard 24mm breast pump flanges, this wearable insert converts your existing flange to a smaller size — available in 13mm, 15mm, 17mm, 19mm, 21mm, and 24mm — so you can find the perfect, personalized fit for your unique shape.

Getting the right flange size is one of the most important steps to a successful pumping experience. A properly fitting flange reduces friction, improves milk output, and prevents discomfort during sessions. This affordable insert lets you fine-tune your fit without buying an entirely new pump or flange set.

Made in Mainland China.

Why You'll Love It

• 6 Size Options: Choose from 13mm, 15mm, 17mm, 19mm, 21mm, or 24mm to achieve your ideal fit.
• Soft, Body-Safe Silicone: Made from premium silica gel that is BPA-free, PVC-free, latex-free, nitrosamine-free, and phthalate-free — safe for you and your baby.
• Flexible & Comfortable: The soft, pliable material creates a gentle, secure seal that reduces irritation and discomfort during pumping.
• Universal Compatibility: Fits inside most standard 24mm breast pump flanges, making it compatible with a wide range of popular pump brands.
• Simple Installation: Just insert into your existing flange — no tools, no fuss. Quick to attach and easy to clean.
• Economical Solution: An affordable alternative to purchasing full replacement flanges in multiple sizes.

Specifications

• Material: Silicone (BPA-free, PVC-free, Latex-free, Nitrosamine-free, Phthalate-free)
• Available Sizes: 13mm, 15mm, 17mm, 19mm, 21mm, 24mm
• Compatible With: Most standard 24mm breast flanges
• Package Includes: 1 x Breast Flange Insert

Who Is This For?

This insert is ideal for new and experienced breastfeeding moms who want to optimize their pumping comfort. Whether you've just started your breastfeeding journey or are looking to improve an existing setup, finding the right flange size can make a significant difference. Learn more about breastfeeding and pumping best practices from the CDC's Breastfeeding Resources.

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Note: Please allow 1–2cm variance due to manual measurement. Slight color differences may occur due to display resolution settings.

Learn more: Breast pump

Frequently Asked Questions

Q: What sizes does this breast flange insert come in?

A: This silicone breast flange insert is available in six sizes: 13mm, 15mm, 17mm, 19mm, 21mm, and 24mm. Each insert is designed to fit inside a standard 24mm flange, reducing the tunnel size to your chosen measurement for a more comfortable, custom fit.

Q: Is this breast flange insert safe to use while breastfeeding?

A: Yes. The insert is made from soft, body-safe silicone that is BPA-free, PVC-free, latex-free, nitrosamine-free, and phthalate-free. It is designed to be safe for both nursing mothers and babies when used as directed.

Q: Will this insert fit my breast pump?

A: This flange insert is designed to fit inside most standard 24mm breast pump flanges. It is compatible with a wide variety of popular breast pump brands. If your pump uses a different flange size, please check compatibility before purchasing.

Q: How do I clean and sterilize the breast flange insert?

A: The silicone material is easy to clean. Rinse with warm soapy water after each use and allow to air dry completely. It can also be sterilized using steam or boiling water, consistent with standard breast pump accessory care guidelines.