3-in-1 Flange Sizing Kit, 10 Silicone Inserts 13–21mm
4.6 (2,269)
Our best-loved kit: two inserts in each of five sizes, a silicone ruler and a sponge brush.
7 colours
$9.99

4.6 out of 5 · 2,267 ratings
The original Nursi Luna insert set that started it all, with ruler and sponge brush.
$9.99 price today — set by the store, may change
Before the colours and the bundles there was this: ten clear silicone inserts, a ruler and a brush in a simple box. Thousands of mothers have measured with it, and it is still the plainest way to stop pumping in a shield that is too big.
★★★★★
Good Quality and Fit All My Pumps!
“I love this kit!! My flange size has changed a couple times throughout my breastfeeding journey and this kit has all the sizes I have needed. The flanges are great quality and have fit in my spectra, baby buddah 2.0, and momcozy s12. Would highly recommend!”
4.6 (2,269)
Our best-loved kit: two inserts in each of five sizes, a silicone ruler and a sponge brush.
7 colours
$9.99
5.0 (8)
The same soft inserts without the smallest size: two each of 15, 17, 19 and 21mm.
$14.99
4.6 (420)
Our newest kit, with a precision ruler and a guide for tracking size changes over the months.
2 packs
from $9.99
Ready when you are — Flange Inserts 10 PCS for 24mm Shields, 13–21mm