Smarbore 2-Pack 21mm Flange Insert for 24mm Shields | Medela/Spectra/Willow Compatible

Enhance Comfort and Fit with Smarbore 21mm Flange Inserts

Smarbore offers a practical, size-adjustment solution for popular breast pump shields. This 2-pack of 21mm flange inserts is designed to reduce the 24mm nipple tunnel to a smaller, more comfortable opening. By creating a secure seal and reducing rubbing, these inserts may help you maintain a steady pumping rhythm. They’re compatible with widely used shield systems from Medela, Spectra, Willow, TSRETE, and Momcozy S9/S12/S9Pro/S12Pro, but they are not suitable for 27mm shields.

Crafted from BPA-free silicone, the inserts balance a gentle touch with durable flexibility. The soft texture supports a comfortable experience across sessions, while the material’s resilience helps the inserts hold their shape over time. This accessory is intended to support your existing pump setup, not to replace any device’s core specifications.

What You Get

• Two silicone flange inserts that convert a 24mm tunnel to a 21mm opening for a personalized fit.
• A BPA-free, skin-friendly material designed for repeated use and reliable performance.
• Simple cleaning and sanitization options to fit into busy pumping routines.

Key Benefits You Might Notice

• Potentially improved seal and reduced rubbing with many 24mm shield configurations.
• Soft, flexible silicone that adapts to your shape for a smoother pumping feel.
• Easy-to-clean design that supports regular sanitization in common ways used for pump parts.
• Broad compatibility across popular brands, offering flexible use with your current pump setup.
• Value in having a pair for convenient rotation or replacement when needed.

How to Use and Care

• During pumping, check that the nipple moves freely and is not pinched inside the tunnel.
• After pumping, wash inserts with warm, soapy water and rinse thoroughly.
• Sanitize via steam, boiling water, or microwave steam bags; ensure they are completely dry before next use.
• Keep away from 27mm shields and use only with compatible 24mm shield configurations.

If you have sizing questions or need quick guidance on fit, Smarbore’s service team is ready to assist. This product is a size-adjustment accessory and is not a medical device recommendation.