
I've been struggling with pain and low efficiency on the breast pump with a 24mm flange. I measured and the 19mm is a much better fit for me. I find that the pumping is MUCH more productive, so I have to pump for less time which is less painful. The shape of the flange could be more oval than circle to fit the breast better, but it seems to be working anyway.

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

Electric breast pump LACTEA Smart Double, beige
59 Review

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

Earth's Best Organic Sesame Street Toddler Crunchin' Crackers, Original Flavor, 5.3 oz Box (6-Pack)
8 Review

🍼 Organic Stage 2 Baby Food, Squash & Peas - Earth's Best, 3.5 oz Pouch (Pack of 12)
7 Review

Earth's Best Non-GMO Soy Plant Based Infant Powder Formula: Iron, Omega-3 DHA & 6 ARA, 21 oz – Comprehensive Nutrition for Infants
7 Review

Omega-3 caps, 1000 mg, 200 pcs.
21 Review