Feature:1. COMPATIBILITY: It isd designed to be compatible with 24mm chest shields/flanges, making them suitable for use with wearable milkpump2. 6PCS INCLUDED: This product includes 6 flange inserts, allowing you to find the perfect fit and ensure optimal comfort and efficiency while saving you money in the long run.3. CONVENIENT AND PORTABLE: Its material is easy to wipe clean, ensuring optimal hygiene. The lightweight nature of these inserts makes them easily portable, allowing you to carry them with you wherever you go.4. LIQUID SILICONE MATERIAL: It is crafted with excellent quality liquid silicone material that is free from BPA. It is not only safe for you and your baby.5. USAGE: Many mothers experience nipple engorgement while pumping, which requires choosing the right size of flange inserts and replacing them every 12 months.Specification:Item Type: Flange InsertsMaterial: Liquid Silicone.Package List:6 x Flange Inserts