The Momcozy Flange insert replacement is designed to maintain the performance, hygiene, and comfort of your wearable breast pump. Built with soft, BPA-free silicone components, this set helps ensure stable suction, smooth milk flow, and reduced leakage during pumping sessions. It is an ideal replacement kit for worn-out pump parts, helping extend the lifespan and efficiency of your Momcozy breast pump system. Easy to assemble, clean, and replace, it supports safe and comfortable daily breastfeeding routines. Compatible with select Momcozy wearable breast pump models S9 Pro and S12 Pro.