Calling all breastfeeding moms! If you're using a wearable breast pump like the S9, S10, or S12 models, having the right flange fit is absolutely crucial for comfort and effective milk expression. This 2-pack of 21mm universal flange inserts is exactly what you need when your original flanges need replacing or you just want some backups. The 21mm size is one of the most common sizes that works well for many women, providing that comfortable seal without being too tight or causing discomfort during pumping sessions. These inserts work seamlessly with your existing wearable pump system, replacing the shield/flange component that directly contacts your breast. The quality silicone material is soft, flexible, and easy to clean between uses. Having two in the pack means you can have a spare ready to go or set up both sides of your pump with fresh flanges. Proper flange fit makes such a huge difference in your pumping experience - when the fit is right, you get better milk flow, more comfort, and more efficient pumping sessions. These universal inserts are designed to work with the narrow connector systems of S9/S10/S12 style pumps, making replacement super straightforward. Whether you're replacing worn-out flanges, trying a different size for better fit, or just want to have backups on hand, these inserts deliver the quality and compatibility you need. Your pumping routine will be so much more comfortable with properly fitting flanges that don't rub, pinch, or cause pain during use. It's one of those simple accessories that can completely transform your breastfeeding journey!
Free 30-day returns 
Free 30-day returns
