Note: The images presented in this section are a guide, not a rule, therefore fitting
may appear differently for all women.
Signs Your Breastshield Is Too Small
• Painful rubbing of nipple in flange.
• Nipple not moving freely inside of flange.
• Redness of the nipple.
• Whiteness of the nipple and/or a white ring around the base of the
nipple.
• Little milk is being expressed.
• General discomfort while pumping.
Signs Your Breastshield is Too Large
• Excess areola is drawn into the flange (a small amount of areola may
enter the flange for some women; however, it should never be
uncomfortable or painful).
• Sensation of pulling and/or pulling pain.
• Nipple is pulled to the end of the flange.
• Shield falls from the breast while pumping.
• Little milk is being expressed.
• General discomfort while pumping.
For Your Information
Although the above instructions provide a good indication of the size of
breastshield you will need, there are few things to consider:
• Every woman’s body responds differently to pumping. It is possible
your measurements before pumping might change during pumping,
therefore we suggest taking measurements of the swollen nipple 5
minutes after pumping.
• Your measurements might be different throughout the day. For
example, you might be fuller in the morning after going a few hours
without pumping and/or feeding at night, warranting a larger size.
You might also be smaller in the evening after consistent pumping or
feeding throughout the day.