
A breast pump flange sizing kit is a collection of flanges or measurement tools designed to help breastfeeding parents find the correct breast shield (flange) size for their individual anatomy.
Did you know that evidence strongly suggests that a large proportion of pumping women in Australia are using an incorrect flange size, which is associated with discomfort and reduced milk expression?
This is why correct flange fit is essential for comfort, effective milk expression, and maintaining milk supply.
The kit includes: Nipple Ruler, Flange Sizing Kit with 10PCS Flange Insert
2x13mm 2x15mm 2x17mm 2x19mm 2x21mm, Silicone & Soft Flange Insert
Flange Sizing Measurement Tool Compatible with most 24mm Breast Pumps.
Have questions?
How do I know which flange size is right for me?
You’ll measure the diameter of your nipple (not including the areola) and match it to the sizing guide included in the kit. The kit helps you test different sizes to find the most comfortable and efficient fit.
Can I use this sizing kit with any breast pump?
Yes. The kit is designed to help determine your correct flange size, which you can then apply to most major breast pump brands.
Why is proper flange sizing important?
A correct fit helps improve milk output, reduces pain, prevents nipple damage, and makes pumping more comfortable overall.
How often should I recheck my flange size?
Your size can change throughout your breastfeeding journey due to swelling, engorgement, or changes in milk supply. It’s recommended to recheck every few months or if pumping becomes uncomfortable.
Is the kit safe and easy to use?
Absolutely. The kit is designed for quick, simple measuring at home using soft, skin-safe materials and a clear sizing guide for accurate results.