Features: Simplify your breast pumping routine with our convenient breast pump flange insert! This converter allows you to easily change flange sizes for a comfortable and efficient pumping experience. Made from safe and flexible silicone, our breast pump flange insert provides a gentle seal for optimal suction and leak prevention. It's designed to be soft and secure, suitable for both you and your baby. Our breast pump flange insert is an essential accessory for breastfeeding. Customize your pumping experience according to your needs with this versatile tool. Whether at home, work, or on the move, our breast pump flange insert makes pumping easier. Attach it to your breast pump and enjoy a hassle free experience wherever you are. Say goodbye to discomfort during pumping and hello to a more enjoyable breastfeeding journey with our breast pump flange insert. Discover its benefits today and see how it can improve your pumping routine. Specifications: Material: silicone Standard: 17mm/19mm/21mm/24mm(optional) Package Includes: 1xSilicone Insert note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.