6.2 Breast Shield Sizing
1. Understanding Medela's breast shield sizing
Pumping should NOT hurt. For maximum comfort and pumping efficiency, Medela offers multiple breast shield
options and sizes.
Visit MedelaBreastshields.com to view the full guide to help you determine your optimal size based on your
nipple diameter.
2. Test your breast shield size
1. Start with the 24 mm that came with your pump, or the size determined by measuring.
2. Center nipple and gently hold breast shield against your breast.
3. Adjust for Maximum Comfort Vacuum
4. Refer to images while pumping in expression.
Too Small
Nipple
Nipple
Areola
Areola
Areola
• Nipple rubs along
side of tunnel
• Try a larger size
3. Should you try a new size?
• Does your nipple rub sides of tunnel, to the point of causing discomfort?
• Do you see excessive areola being pulled into tunnel?
• Do you see any redness?
• Is your nipple or areola turning white?
• Do you feel unexpressed milk after pumping?
If you answered "YES" to any of these questions, consider trying a new size by following the measuring
instructions above.
If you are still unsure if you selected the correct size, see a lactation consultant, breastfeeding specialist, or visit
MedelaBreastshields.com for assistance in choosing the right size breast shield.
CAUTION
• While some discomfort may be felt when first using a breast pump, using the breast pump
should not cause pain.
• If you are experiencing discomfort at the base of the nipple due to rubbing of your
breast tissue with the breast shield tunnel, use of a lubricant such as Tender Care
may be beneficial.
Questions? Visit Medela.com or call us at +1-800-435-8316.
, to achieve optimum suction level.
™
Correct Fit
Nipple
Areola
• Nipple is centered
and moves freely
Nipple
Nipple
Nipple
Areola
Areola
• Nipple and excessive
• Try a smaller size
Too Large
Nipple
Nipple
Areola
Areola
Areola
areola are pulled into
the tunnel
™
Lanolin
Nipple
15