When it comes to wearables, fit really matters — and fit starts with your flange. (It’s the cone-shaped funnel that seals over your nipple to transfer milk!)

Sometimes, fit can be tricky. The flange in your pump kit may not fit perfectly right out of the box, and your nipples will change in size over time. So our Perfect Fit Bundle makes it easy to take your measurements, experiment with inserts, access expert-backed education, and connect with a Sizing Specialist for personalized guidance.