The Luna Size Guide
Find your Luna flange size
-
Measure both nipples
Before pumping, gently stimulate your nipple so it stands out. Measure its width at the base in millimetres. Measure only the nipple, not the areola.
Use a millimetre ruler or the included nipple ruler. With the nipple ruler, choose a hole that fits without squeezing. Measure each side separately.
-
Find your fit
Match each measurement to the chart above for a starting size. Your left and right sides may need different sizes.
When pumping, your nipple should move freely without painful rubbing or pinching. If it hurts, stop and check the fit.
Included with Luna: 24 mm flange + 17, 19 and 21 mm inserts.
Need a size outside the kit? 15 mm inserts and 27 mm flanges are available separately. Between sizes? Ask us for help.