Your breast shield size is important for your comfort and efficient pumping.

Your end goal of pumping for your little one is to get as much out of your sessions as possible. Therefore a breast shield that’s too large or too small can greatly impact the amount of milk you are able to pump.

Even if you are a pro and have been pumping for a while, keep in mind that your breast shield sizing can change during your breastfeeding journey. Your pumping routine might benefit from a re-evaluation and resizing. You might even find that each breast needs a different flange size.

Remember, pumping shouldn’t hurt!

The size of your nipples will determine your Breast Shield size, therefore it must be properly measured for best results.

After measuring, add 3-4mm to find your correct size. For example, if your nipple diameter measure 16 mm, your Breast Shield size is 19-20 mm.

Spectra Breast Shields come in four sizes – 20mm (Small), 24mm (Medium), 28mm (Large ) and 32mm (Extra Large).

When your breast shield fits correctly , while pumping, your nipple will be centered in the breast shield tunnel , it should not rub or feel squished inside the Breast Shield tunnel. All of your nipple should fit into the Breast Shield tunnel and move in and out freely.

If you feel any discomfort, nipple pain or nipple blanching (turning white) while pumping, you may need a larger size.

If you have more questions or need further help with breast shield sizing, reach out to us and we can help directing you to a Certified Lactation Consultant. In the long run, it’s worth taking the time to determine the size that’s right for you. You’ll benefit by maximising your pumping sessions so you can get back to what matters most – the little one you are pumping for!

Read next about Accessory Replacement.

Please have a look below to see how a Correct Fit should look like.