Comment ✨Nip Care✨ for link to ruler and flanges! IMO, the lactation kit is way more cost effective bc i have ordered four inserts individually in the past seven months due to my decrease in size and it totaled more than $80. The kit also has the tape measured and nip ruler along with all the flange sizes you need! FYI if you’re pumping, you should remeasure your nip once a month to make sure you’re using the correct flange size. Continuing to use one too small or large can increase chances of c