5 Pcs Flange Inserts 13/15/17/19/21mm Food-grade Silicone for 24mm Flange/Shield of Most Pumps, BPA Free Inserts, Compatible with Momcozy/Spectra/Bellababy/TSRETE/Nuliie Breast Pumps

• Size: These 13/15/17/19/21mm breast pump flange insert are designed specifically for 24mm Shields/Flanges and are not compatible with 27-28mm Shields/Flanges. They will narrow the nipple channel of the 24mm shield to 13/15/17/19/21mm. (Note: 5 sizes, 5 flange inserts, not 5 pairs.) • Newbie Mom Friendly: Your two breasts may differ in size and change over time. Try various combinations, compare the results, find the most effective fit, and then order an ample supply of the appropriate flange insert sizes to match your pump. • Safety: Crafted from food-grade silicone, flange inserts are BPA-free, ensuring your peace of mind when in use. They are also dishwasher safe for convenient cleaning. • Easy to install, remove, and clean: One-click installation and removal. Easily clean with warm soapy water after each use. Note: Can also be sterilized using boiling water/steam at around 100°C (212°F). • The product includes the measuring tools you need to find the different sized flange inserts needed at different stages of breastfeeding, with five different sizes included to ensure you find the perfect size.