Free · 10 minutes · walk-ins welcome
Free flange sizing
Wrong flange size is the #1 reason pumping hurts and supply drops. Come in for a free 10-minute fitting with one of our lactation-trained team members. We'll measure both sides, try inserts if needed, and send you home confident.
In-person sizing is more accurate than any online chart
We stock flanges from 13mm to 36mm
Bring your pump, or use one of ours
Self-measure guide
Measure your nipple diameter (not areola) in millimeters at the base, right after pumping. Add 2–3mm for your flange size. Common sizes: 17, 19, 21, 24, 27, 30, 36mm. Still unsure? Come in — it's free.