Medela Comfort BreastShield（BPA free – safe for mums and babies）
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One-piece design; easy to clean, less piece to keep, and less chance for suction power loss.
All components are safe for steam sterilization,microwave sterilized or sterilized in boiling water.
Compatible with all Medela pumps except FreeStyle, Swing Maxi and Harmony.
US FDA registered medical device (No. D192499); Comply with US FDA standards for containers that contact food and class II medical device.
Standard sized 25 mm inner diameter is most comfortable for the majority of breast feeding moms.
To autoclave, place the flange in 121oC, 1 kg/cm2(or 14.2 psi) for 15 minutes. Test reports done by independent lab show that Maymom flange does not change physically after the autoclave procedure, and it can still pass the FDA 21 CFR, 177.1520 specifications for polypropylene (FDA PP report).
How to choose the right size of breastshields for you?
The inner diameter of the breastshield (B) should be 1-2 mm larger than the diameter of your nipple (N). AFTER a pumping session or 3-5 mm BEFORE a pumping session. You should be able to see free movement of your nipple during pumping and there should be little or no suction of the areola into the tunnel of the breastshield.