Nuliie Flange Inserts for 24mm Breast Pumps Flanges, 10PCS Silicone Flange Insert Kit with 13/15/17/19/21mm Sizes, Fits Most Wearable Breast Pump and Electric Breast Pump Flanges, BPA-Free

Finding the correct flange size can make a huge difference to comfort, milk output, nipple pain, and overall pumping experience. This handy sizing kit helps you accurately measure your nipple size and try different insert sizes to achieve a better fit with many popular breast pumps.
Perfect for moms who are struggling with pain while pumping, reduced milk output, rubbing, swelling, or discomfort using standard 24mm flanges.

Why We Love This
Helps moms find a more comfortable and efficient pumping fit
Includes multiple insert sizes to allow flexibility as nipple size changes during breastfeeding
Compatible with many of the most popular wearable, manual, and electric breast pumps
Soft silicone inserts help reduce friction and discomfort
Measuring guide included to help choose the correct size
A fantastic addition for moms exclusively pumping, combination feeding, or building a freezer stash

Key Features
Multi-size flange insert kit
Designed for use with most standard 24mm breast pump shields/flanges
Includes nipple measuring guide
BPA-free silicone inserts
Soft, flexible, and comfortable material
Easy to insert, remove, clean, and sterilize
Can help improve suction comfort and milk flow
Compact and lightweight for home or travel use

Included Sizes
This kit includes:
13mm insert
15mm insert
17mm insert
19mm insert
21mm insert
Nipple measuring guide
Cleaning brush/tool

Compatible With Many Popular Breast Pumps
Wearable Pumps
Compatible with many wearable breast pumps using 24mm shields, including:
Momcozy S9 / S12 / S12 Pro / M5
Elvie Pump
Willow
TSRETE
Bellababy Wearable Pumps
Eufy Wearable Pumps
Lansinoh Wearable Pump

Electric Pumps
Compatible with many electric pumps using 24mm flanges, including:
Spectra S1
Spectra S2
Spectra Gold
Medela Pump In Style
Medela Freestyle Flex
Lansinoh Smartpump
Bellababy Double Electric Pumps
Motif Luna
Ameda pumps with compatible 24mm shields

Manual Pumps
Compatible with many manual pumps using standard 24mm shields/flanges, including:
Medela Harmony Manual Pump
Lansinoh Manual Breast Pump
Bellababy Manual Pumps
Compatibility may vary slightly depending on flange style and version. These inserts are designed for use with standard 24mm breast shields/flanges.

How To Use
Use the included measuring guide to determine your nipple size
Choose the insert size closest to your measurement
Insert the silicone flange insert into your 24mm breast shield/flange
Pump as normal
Reassess sizing if you experience rubbing, swelling, discomfort, or reduced milk flow

Who This Product Is For
Moms experiencing nipple pain while pumping
Moms using flanges that feel too large
Exclusive pumpers
Moms using wearable pumps
Breastfeeding moms building a milk stash
Moms whose nipple size changes during breastfeeding or pumping

Care Instructions
Wash thoroughly before first use
Wash after each use with warm soapy water
Rinse well and allow to air dry completely
Can be sterilized using steam or boiling water according to manufacturer guidance

Safety & Returns Policy
For hygiene and safety reasons, there are strictly no returns or exchanges on breastfeeding and personal care items once opened or used.
Always inspect pump parts regularly and discontinue use if damaged. Proper flange sizing is important for comfort and effective milk removal. If you are experiencing ongoing pain or difficulty pumping, seek support from a qualified lactation professional.