Essential for New Moms: Nursi Luna Flange Sizing Kit 3 in 1, developed by an IBCLC (International Board Certified Lactation Consultant), enhances comfort and pumping efficiency for new moms, addressing common confusion and discomfort during breastfeeding. Highly Compatible: 10Pcs Flange sizing kit come in a variety of sizes to choose from 13/15/17/19/21mm (2 flange inserts of each size) Fits with 24mm flanges/shields. Note: Not compatible with 27-28mm shields Getting The Right Flange Size: Nipple size can change during different breastfeeding stages, requiring adjustments for optimal comfort. Our nipple ruler based on IBCLC recommendations, provides precise sizing to ensure a perfect fit and efficient pumping Safe For Baby And Mom: Made from food-grade silicone, BPA-free, easy to clean, and dishwasher safe. Includes a sponge cleaning brush. Replace flange insert every 2 months for optimal performance Perfect Gift for New Moms: Our silicone flange inserts help mothers quickly and comfortably find the right size, ensuring a smooth pumping experience. Product description Right fit, better flow & comfort Find your perfect fit for effortless pumping Use a Nipple Measuring Ruler Tool Place the bottom of the nipple perpendicular to the ruler or nipple measure tool card. Determine Your Size Use a size chart for guidance on the proper size for the fit. If your nipple rubs or feels squeezed in the flange channel, it is an unsuitable flange size and you need to replace the right size flange/insert. Designed with Love, Backed by Science Complete Your Comfort — Explore Nursi Luna Essentials Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.6 out of 5 stars 1,649 4.6 out of 5 stars 1,640 4.6 out of 5 stars 266 4.7 out of 5 stars 284 4.4 out of 5 stars 104 4.4 out of 5 stars 19 4.6 out of 5 stars 22 Price $15.99$15.99 $9.99$9.99 $9.99$9.99 $5.49$5.49 — $18.88$18.88 $19.99$19.99 Main Use Improve comfort & milk flow Improve comfort & milk flow Improve comfort & milk flow Ensure optimal flange fit Clean bottles & parts Improve comfort & milk flow Improve comfort & milk flow Special Feature Breastfeeding Essentials Kit Breastfeeding Essentials Kit Breastfeeding Essentials Kit Flexible & Gentle Deep Clean Milk Residue & Odor Breastfeeding Essentials Kit Breastfeeding Essentials Kit Material Food-grade silicone Food-grade silicone Food-grade silicone Food-grade silicone Gentle Formula Food-grade silicone Food-grade silicone Compatibility Fits 24mm pumps Fits 24mm pumps Fits 24mm pumps Universal fit All Brands Baby Bottle Washers Fits 24mm pumps Fits 24mm pumps BPA Free ✔ ✔ ✔ ✔ ✔ ✔ ✔