Nursi Luna Flange Sizing Kit 3-in-1 — 10 Silicone Inserts (13/15/17/19/21mm) for 24mm Shields

Comfort-first design for new moms

Breastfeeding and pumping can be a journey, and finding the right flange size is a common challenge. The Nursi Luna Flange Sizing Kit 3-in-1, developed by an IBCLC, offers a practical, evidence-informed approach to tailor your pumping setup for daily sessions.

What’s in the kit

• 10 silicone flange inserts across 13, 15, 17, 19, and 21 mm sizes (2 inserts per size)
• Designed to fit with 24 mm flanges/shields for versatile compatibility
• Includes a nipple ruler to support precise sizing based on IBCLC guidance

How sizing supports comfort and efficiency

Size can change with feeding patterns and time, so a flexible assortment helps you discover a fit that feels natural and reduces pressure during pumping. This kit encourages experimentation with confidence, so you can focus on the workflow that suits your daily routine.

• Precise fit to improve pumping alignment and comfort
• Variety of sizes to accommodate stage-to-stage changes
• Easy-to-clean silicone that stands up to regular use

Care, safety, and maintenance

All inserts are made from food-grade silicone and BPA-free, with dishwasher-safe cleaning options for busy days. The kit includes a sponge cleaning brush and suggests replacing inserts every 2 months for best performance.

• Food-grade, BPA-free silicone for peace of mind
• Dishwasher-safe and easy to wipe clean
• Spare parts refresh every couple of months to maintain performance

Who is this for

Ideal for new moms who want a comfortable, customizable pumping setup and a practical reference to help choose the right size more quickly. While results vary, the right insert can contribute to smoother sessions and more confidence during pumping.

Key notes

Not compatible with 27–28 mm shields. This kit is designed to work with 24 mm flanges/shields, offering a versatile approach without committing to a single size.