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. With sizes ranging from 13mm to 21mm, you can choose the insert that best suits your individual needs. Enhanced Comfort and Efficiency: These flange inserts help improve comfort during pumping and support efficient milk expression. A proper fit helps reduce discomfort and enhances overall pumping performance. Easy to Use: Simply select the desired size and place it inside your breast pump cup for a secure and customized fit. The inserts are straightforward to install and remove as needed. 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. Designed for reliability and safety with no compromise on performance. Compatible with Various Breast Pump Cups: These inserts are designed to work with a wide range of wearable breast pump cups, offering versatility and convenience for different pumping setups.