Okay, so I was skeptical at first because flange sizing seems like such a small thing, but HOLY COW this kit made ALL the difference in my pumping journey!

The 10-piece set with multiple sizes is perfect because - newsflash - your nipple size changes throughout breastfeeding (who knew?!). The included measuring tool helped me realize I'd been using flanges TWO sizes too big this whole time.

After switching to the correct size from this kit, my output literally doubled overnight. No joke. And the comfort level? Night and day difference - no more soreness or irritation.

Pro tip: The cleaning brush is super handy for getting into all those little crevices. Much better than trying to use my fingers or a regular sponge.

Small heads-up though - they didn't work perfectly with my Momcozy pump (minor leakage issues), but they're amazing with my Medela. For the price, even if they only work with some of your pumps, it's totally worth it.

If you're on the fence about buying this, just do it. It might save your breastfeeding journey like it did mine!