Flange Inserts for Perfect Fit: Our 10PC set of flange inserts is designed to provide a secure and comfortable fit for wearable breast pump cups. Available in sizes from 13mm to 21mm, these inserts allow you to customize the fit based on your individual needs. Enhanced Comfort and Efficiency: These flange inserts help improve pumping comfort and efficiency. A proper fit can support effective milk expression and reduce discomfort during use. Easy to Use: Simply choose the appropriate size from the set and insert it into your breast pump cup for a secure and personalized fit. Durable and Safe Materials: Made from high-quality, safe materials, these flange inserts are free from harmful substances and built to last through repeated use. Compatible with Various Breast Pumps: Designed to work with a wide range of wearable breast pump cups, these inserts offer versatility and convenience for different pumping setups.