Breast Pump Flange Sizing: Using eufy Sizing Inserts Correctly
By eufy - Built with Care | Home Security System & Robovacs | Published: 2026-11-03
Category: Guías prácticas
Learn how to measure your nipple, choose the right eufy sizing insert, and install it for a comfortable, effective pump session.
Quick answer
Measure your nipple base, match it to the eufy sizing insert that fits, and insert it into your pump flange before each session. Recheck your size if pumping becomes uncomfortable or output drops.
Why flange sizing matters more than you think
A flange that is too large pulls in areola tissue, which can cause pain and reduce milk removal. One that is too small rubs the nipple and restricts flow. eufy sizing inserts let you adjust the tunnel diameter without buying a new pump, so you can fine-tune comfort as your body changes.
When to recheck your size
Nipple size can shift during your breastfeeding journey, especially in the early weeks or when your supply regulates. If you notice redness, pinching, or a sudden drop in output, remeasure before assuming the pump is the problem.
Step-by-step: using eufy sizing inserts
- Measure your nipple base: Use a ruler or the eufy sizing guide to measure the diameter of your nipple base (excluding the areola). Measure both nipples, as they can differ. Write down the measurement in millimeters so you can compare it to the insert sizes.
- Choose the matching insert size: Select the eufy sizing insert that corresponds to your measurement. If you are between sizes, start with the smaller one to avoid pulling in areola. A correct fit should feel snug but not pinch; you should see only nipple, not areola, in the tunnel.
- Insert the sizing insert into the flange: Press the insert firmly into the flange tunnel, ensuring it sits flat and fully covers the inner rim. The insert should not wobble or leave gaps. Check that the insert is centered; an off-center insert can cause uneven suction.
- Test the fit during pumping: Start pumping on a low suction setting and watch how your nipple moves in the tunnel. It should move freely without rubbing against the sides. If you feel pinching or see areola being pulled in, stop and try a different insert size.
- Clean and store the inserts after each use: Wash the inserts with warm soapy water, rinse thoroughly, and air dry. Store them in a clean, dry place away from direct sunlight. Inspect regularly for tears or discoloration and replace if damaged.
Product facts
- eufy Sizing Inserts for All Breast Pump (2-Pack): Exclusively designed to be fully compatible with eufy Wearable Breast Pumps. You can use these inserts with your eufy pump without worrying about fit or safety.
eufy Sizing Inserts for All Breast Pump (2-Pack) - eufy Sizing Inserts for All Breast Pump (2-Pack): Crafted from premium, BPA-free, food-grade liquid silicone. The soft silicone is gentle on sensitive skin and safe for contact with breast milk.
