This little piece here, squishing up against the breast, is the infamous flange. Why is it so important? Well because without it your pump won't pump.

The Momcozy flange insert is designed for the Momcozy S9 Pro and S12 Pro wearable breast pumps. This flange inserts to compatible with Momcozy 24mm

Momcozy Flange Insert 19mm for S9Pro S12Pro Breast Pump, Made by Momcozy, 1Pc

CORRET SIZE, MORE COMFORTABLE: The size of your flange insert is important for comfort and efficient pumping. Some moms will experience nipple

Flange Insert 21mm Compatible with S9/S12 Wearable Breast Pump, Original Part Accessories Replacement, Reduce 24mm Nipple Tunnel Down to 21mm, Correct

Flange 19mm Replacement,Suitable for S9/S10/S12,Wearable Breast Pump Shield/Flange Insert,Milk Collector 24mm Universal : Baby

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What if Your Breast Pump Flanges are TOO Small?!

CONTENT: Maymom flange 17 mm; 1 pc; buy two if you pump two sides at the same time. USE: Compatible with Ameda Mya Joy, Mya Joy Plus, Purely Yours

Maymom Breast Shield Flange Compatible with Ameda Breast Pumps Purely Yours, Finesse, NOT for Ameda MYA(17 mm, X-Small, 1-Piece)

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Correct Flange Size When Pumping

This little piece here, squishing up against the breast, is the infamous flange. Why is it so important? Well because without it your pump won't pump.

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Content：Begical 2pc 22mm Flange Made By Begical. Suitable For Mother With A Nipple Diameter 19-21mm (Measured After A Pumping Session). Compatible

Wearable Breast Pump 22mm Flanges Compatible with Momcozy/Tsrete/kmaier/hezkugu Breastpump Replacement Parts Replace Flange Insert Silicone Shields