Features: Our silicone breast pump flange insert is designed to fit most standard breast pumps, providing a comfortable and efficient pumping experience. Easily switches between different flange sizes for a perfect fit. Made from soft and flexible silicone material, our breast pump flange insert ensures a gentle and secure seal, preventing leaks and discomfort during pumping. Enjoy a hassle free breastfeeding experience. Designed for breastfeeding moms who need to adjust their breast pump flange size, our breast pump flange insert is a convenient solution. It allows for customization to meet individual needs, making it suitable for both new and experienced moms. Our breast pump flange insert makes pumping easier and more convenient, whether you're at home, work, or traveling. Simply insert it into your breast pump flange for a comfortable and discreet pumping experience. Maintain your milk supply and provide nourishment for your baby anywhere, any times. Say goodbye to uncomfortable pumping and hello to a more enjoyable breastfeeding journey with our breast pump flange insert. Experience the comfort, efficiency, and convenience it brings. Invest in this essential accessory today for a pleasant pumping experience. Specifications: Material: silicone Standard: 14mm/16mm/18mm/20mm(optional) Package Includes: 1xFlange 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.