GOCROWEEN Flange Insert 21mm (3PC) for Momcozy S12 Pro/S9 Pro/S9/S10 – Reduce 24mm to 21mm, BPA Free

Product Overview

The GOCROWEEN 21mm Flange Insert is a flexible silicone shield designed to expand your wearable pumping options. This 3-piece set provides a 21mm size that adapts a standard 24mm tunnel, offering a more tailored feel across compatible pumps without replacing your current equipment.

Key Benefits

• Versatile compatibility with many wearable pumps, including Momcozy S-series and a wide range of third-party brands.
• 21mm insert narrows the nipple tunnel from 24mm to 21mm, helping you maintain a snug, stable seal during use.
• Made from BPA-free, food-grade silicone that withstands steam sterilization, boiling water, and microwave steam bags.
• Easy to clean after every session—wash with warm soapy water and rinse well to keep it ready for next use.

Care, Comfort, and Fit

• The right size matters for comfort; monitor nipple appearance during pumping for swelling or irritation and adjust as needed.
• Replace the flange insert every 1–2 months to help maintain fit and performance with your pump.
• Note: this is an aftermarket 21mm insert with a transparent diaphragm and is not an original Momcozy part.

How to Use

To use, detach the 24mm shield, insert the 21mm piece into the wearable flange, and reassemble with your pump according to the manufacturer’s directions. Sanitize before first use and after each pumping session.

Real-Life Scenarios

In everyday pumping, the soft silicone exterior feels smooth against skin, providing a comfortable seal that supports a calm, routine-ready moment. The clear diaphragm allows quick visual checks during setup, helping you feel confident before you start.

Notes on Fit

Keep in mind that proper sizing matters for comfort and efficiency. If you notice irritation, numbness, or swelling, reassess fit and consider trying a different size within the range of compatible inserts.