Can these be boiled? Mine is losing its shape and so the ends are pinching me bad.

I boiled mine to sanitize them when I first got them. Seemed fine.

If i measured 15mm would these be correct or should i purchase a 17mm insert?

I believe it depends on which pump you are trying to get. Willow needs exact sizing, I’ve heard to go up in spectra. I bought 15 and 17 and use whichever one was more comfortable, which was the true to size, 15s. Hope that helped!

If anyone used these with momcozy s9 how well did they work??

They work very well. I used them in the 24mm momcozy

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Maymom Flange Inserts 15 mm Compatible with Medela and Spectra 24 mm Shields/Flanges. Use with Medela Freestyle and Sonata to Reduce Nipple Tunnel Down to 15 mm; Also Fits Freemie 25 mm Cups. 2pc

Maymom Flange Inserts 15 mm Compatible with Medela and Spectra 24 mm Shields/Flanges. Use with Medela Freestyle and Sonata to Reduce Nipple Tunnel Down to 15 mm; Also Fits Freemie 25 mm Cups. 2pc

Product ID: 341597618

Details

Brand
Maymom
Size
2 Count (Pack
Material
Silicone
Bottle nipple type
silicone
Manufacturer
Maymom

📏Reduces nipple tunnel to 15mm

🔄Compatible with 24-25mm shields

🧴BPA-free food-grade silicone

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7754 som

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📏 Perfect fit, maximum comfort—because every drop counts!

TRUSTED BY THOUSANDS - Highly rated with 4.4 stars from over 1,300 moms who swear by its performance.
HANDSFREE BRA FRIENDLY - Maintains full compatibility with most handsfree pumping bras—pump on the go, hassle-free.
UNIVERSAL COMPATIBILITY - Seamlessly works with Medela, Spectra, Freemie, and other popular 24-25mm flange systems.
SAFE HYGIENIC MATERIAL - Crafted from BPA-free, food-grade silicone ensuring safety for you and your baby.
PRECISION FIT FOR SMALL NIPPLES - Transforms 24mm shields to a snug 15mm tunnel for ultimate comfort and efficiency.

Maymom 15mm flange inserts reduce the nipple tunnel size of 24mm Medela and Spectra shields down to 15mm, providing a customized fit for small-nippled mothers. Made from BPA-free, food-grade silicone, these inserts maintain compatibility with a wide range of breast pump brands and handsfree bras, enhancing comfort and pumping efficiency.

Specifications

ASIN	B08CNC7M9H
Best Sellers Rank	#87,719 in Baby Products ( See Top 100 in Baby Products ) #822 in Breast Pumps
Bottle Nipple Type	silicone
Bottle nipple type	silicone
Brand	Maymom
Country of Origin	USA
Customer Reviews	4.4 out of 5 stars 1,356 Reviews
Manufacturer	Maymom
Manufacturer Part Number	X012-i15x2
Material	Silicone
Model Number	X012-i15x2
Size	2 Count (Pack of 1)

Reviews

A**Y

Not compatible with Momcozy m5

23.08.2025

B**G

Work so well with Spectra Cups

14.03.2024

E**N

A life saver

18.05.2022

V**U

Très bien

Conforme à la description. Malheureusement je trouve que l’on a un peu de mal à voir si on est bien positionné car les parois sont un peu opaques. Mais sinon très bien

7.12.2025

P**E

Worked good

30.11.2025

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