How do I know what size Flanges will fit me?

Our NCVI breast pump comes standard with four flange size options 21mm, 24mm, 28mm and 32mm. You can also purchase an extra convertor offering the ability to size even smaller to 17mm or 19mm if needed.

To determine your "SIZE", you have to measure your nipple size as follows:

Stimulate your nipple so that it stands up and use a ruler to measure the width (diameter) of the nipple base (don't include the areola).

 

Nipple sizes:

 

Breast shield size:

 How to purchase:
12 to 14mm 17mm Fit your size 21mm flanges, and insert a size 17mm convertor (buy separately - Click here to buy)
14 to 16mm 19mm

Fit your size 24mm flanges, and insert a size 19mm convertor (buy separately - Click here to buy)
16 to 18mm 21mm

Use your size 21mm flanges
19 to 21mm 24mm

Use your size 24mm flanges
22 to 24mm 28mm

Use your size 28mm flanges


If you are currently pregnant consider sizing up a few millimetres as your nipple size can get slightly larger following childbirth.

Finding the best fit breast shield is important for both your comfort and effectiveness of the breast pump. Once you are pumping, if you have any discomfort or concerns about your size we recommend talking to a Lactation Consultant.

If you have any further questions, please email us at management@chai-namibia.com