The Pippeta Pump Flange Insert is designed to provide maximum comfort and efficiency during pumping. Made from soft, flexible, food-grade/BPA-free silicone, it conforms to your body shape for a perfect fit. The smooth design ensures gentle, effective suction without uncomfortable ridges. Easy to clean and reusable, it's an economical choice for new and experienced mothers. Available in 17mm, 19mm, 21mm, and 27mm sizes.