In plain words
A flange is the cone-shaped part of a breast pump that fits over your breast. The nipple sits in the tube, and the rests against the edge. Flanges come in different sizes, and the right size is different for each person. A flange that is too small can rub and pinch the nipple. A flange that is too large can pull too much of the areola in. Both can cause pain and less milk removed. Many mothers find that a sizing guide and a trial with a helps. Most pumps come with one size, and replacements are sold separately. If pumping hurts, or you see skin damage, tell your provider or a lactation consultant.
The deeper version
Flange sizing is a determinant of pumping comfort, , and . Lactation guidance commonly describes measuring nipple diameter and checking how the nipple and areola sit in the flange tunnel when selecting a size. Oversized or undersized flanges can produce friction, areolar compression, and reduced milk output. Evidence for specific sizing algorithms is limited, and outcomes depend on the pump and the person. Insurance programs under the cover breast pumps, and sizing support may be available through lactation services.
Where it comes up
- Flange sizingFeeding Your Baby
- Choosing a pump (and getting it through insurance)Feeding Your Baby
- Pumping: how, when, how oftenFeeding Your Baby
- Nipple pain, cracks, and healingPostpartum: Your Body
What mothers here say about flange
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Sources
- Academy of Breastfeeding Medicine — Clinical protocols on breast pumping and milk expression, current edition