Smarbore 4PCS 19mm Flange Insert for S9/S10/S12 Wearable Breast Pumps

Enhance Comfort with Smarbore 19mm Flange Inserts

Meet a practical accessory designed to tailor fit for your wearable breast pump sessions. This 4-pack of 19mm silicone inserts works with 24mm shield setups from major brands, offering a subtle size adjustment to suit different pumping moments.

In everyday use, the soft silicone edge glides smoothly against the skin, providing a gentle touch during longer sessions and giving you a sense of reliability as you pump. The 4-pack lets you rotate between inserts to maintain an optimal fit across days, so you can choose the feel that best supports your routine.

Fit, Compatibility, and Real-World Use

These inserts are designed to reduce a 24mm shield nipple tunnel toward a closer, more comfortable fit. They’re compatible with popular wearable pumps, including S9, S9 Pro, S12, S12 Pro, and shields from Medela, Spectra, Willow, TSRETE, and Momcozy. Note: they are not designed for 27mm shields.

Material and Safety

Crafted from BPA-free silicone, the inserts feel soft and flexible against the skin while remaining durable throughout daily use. The smooth edges minimize rubbing, and you’ll be able to swap parts as needed to maintain a clean, reliable setup.

Care, Cleaning, and Sanitation

• Easy to clean: wash after each use with warm soapy water and rinse well.
• Sanitize options include steam, boiling water, or microwave-steam bags.
• Keep inserts in a clean, dry place between uses to extend their life.

Choosing the Right Size

Size choices matter for comfort and pumping efficiency. If you notice mild nipple swelling during pumping, consider experimenting with the 19mm insert to see if the feel improves. Always ensure the nipple tunnel isn’t squeezed or rubbed inside the shield.

Observing how your nipple sits in the tunnel during pumping can help you decide when to switch sizes. If rubbing or squishing occurs, the 19mm option may offer a more comfortable alternative without sacrificing control.

Care and Support

We stand behind the quality of these replacement parts. If you have questions about sizing or fit, our service team is available to help find the best solution for your setup.

Key benefits at a glance

• Precise 19mm insert for a closer fit with 24mm shields
• Broad compatibility with top wearable pumps and shield brands
• Soft, BPA-free silicone for skin-friendly use
• Easy cleaning and reliable sanitation options