Calling all pumping moms! If you've been struggling to find the right flange size for your wearable breast pump, these 17mm flange inserts could be exactly what you need for a more comfortable and efficient pumping experience. They're designed to reduce your 24mm shield or flange nipple tunnel down to 17mm - which might be the perfect fit if you've found the standard size just isn't working for you. They're compatible with a ton of popular pump brands including Medela PersonalFit shields, Spectra flanges, Momcozy S9/S10/S12 series, and many other wearable pumps from brands like TSRETE, Luxlady, HAUTURE, and more. Made from food-grade silicone that's BPA-free, they're completely safe and can be sterilized using steam, boiling water, or microwave steam bags. Cleaning is simple too - just wash with warm soapy water after each use and rinse well. Here's the important part though - getting the right flange size is crucial for both comfort and effective milk expression. Some moms experience nipple swelling during pumping, so it's good to observe how your body responds. Most manufacturers recommend replacing these inserts every 1-2 months for optimal performance and hygiene. Having the correct fit can really make all the difference in your pumping journey!