I have very elastic nipples and I bought these hoping they would help with pumping. Very minimally, if at all. I didn't notice a difference.However, if this is not your issue, they seem to be made with quality, and they stick in my flanges pretty well. I did notice some milk got trapped between the insert and flange.
Nenesupply 21Mm Flange Replacement Kit Compatible With Spectra S2/S1 Breast Pumps, Including Ducksbill Valve, Backflow Protector, And Other S2 Accessories And Parts
39 Review
Nenesupply Pump Parts Compatible With Medela Breastpump Not Original Medela Pump Parts 24Mm Breastshield Valve Membrane For Medela Pump In Style Medela Symphony Swing Replace Medela Breastshield
47 Review
Nenesupply 21Mm Flange Pump Parts - Compatible Replacement Kit For Spectra S2/S1 Breast Pumps With Essential Accessories
42 Review
Wireless Wearable Breast Pump By Befano: Hands-Free S12 Electric Pump With 24Mm And 27Mm Flanges, 2 Modes, 9 Levels For Breastfeeding, Silent And Portable With Single Pump - Pink
37 Review
Delicious Katjes Kinder Licorice Cat-shaped Drops 200g Licorice Pieces: Value Pack of 3!
7 Review
Plum Organics Hearty Veggie Variety πΌ Pack, 3.5oz Pouches, 18-Pack - Organic Baby Food
8 Review
Earth's Best Non-GMO Soy Plant Based Infant Powder Formula: Iron, Omega-3 DHA & 6 ARA, 21 oz β Comprehensive Nutrition for Infants
7 Review
π₯¦ Sprout Organic Baby Food, Mediterranean Veggie Power Bowl with Beans & Quinoa, 5 Oz Bowl (8 Count) - Ideal for Toddlers & Infants
8 Review