The 19 mm flange for Momcozy S9 Pro and S12 Pro breast pumps, sold in a set of 4 pieces, is an accessory that adjusts the size of the breast shield for a better fit on the nipple and a more comfortable pumping process. Its use optimizes sealing and reduces discomfort caused by an improper size.

• Helps achieve a more precise fit for comfort and pumping efficiency.
• Reduces friction inside the breast shield when the standard size does not fit.
• Quickly attaches to the breast pump and stays securely in place for easy use.
• Useful set for daily swapping and maintaining cleanliness.

The 19 mm flange for Momcozy S9 Pro and S12 Pro breast pumps is compatible with the portable pumps Momcozy S9 Pro and S12 Pro. The insert is designed to be used inside the 24 mm breast shield, allowing the diameter to be reduced to 19 mm without replacing the entire unit.

The insert is made from food-grade silicone, BPA-free, suitable for components that come into contact with breast milk. The soft material provides a more pleasant feel during use and a better fit inside the breast shield.

For the best results, select the correct nipple size and observe how it fits inside the breast shield during pumping. If the nipple rubs or feels "tight," the insert size should be adjusted. The 19 mm flange is inserted into the breast shield until it sits evenly on the edges for a secure seal.

Wash the insert after each use with warm water and dish soap, then rinse thoroughly. For sterilization, it can be boiled or steam sterilized along with other pump parts. Allow all parts to dry completely before reassembling.

• Product type: Insert (reducer) for pump flange
• Insert size: 19 mm
• Compatibility: Momcozy S9 Pro and S12 Pro
• Material: Food-grade silicone
• Material safety: BPA-free
• Package contents: Set of 4 pieces
• Cleaning: Wash after use; can be boiled or steamed for sterilization