How to Use a Breast Pump Flange Insert: Sizing, Comfort, and Output Tips

Quick Answer

To use a breast pump flange insert, first confirm your nipple diameter and choose the correct size. Then insert the flange into the breast shield, ensuring a snug fit, and pump as usual. Proper sizing is key to comfort and output.

If pumping feels uncomfortable or your output is lower than expected, the issue might be the fit of your breast pump flange. Flange inserts are small silicone pieces that adjust the tunnel diameter to better match your nipple size, creating a better seal and more efficient pumping.

This guide walks you through how to use a breast pump flange insert, from measuring your nipple to troubleshooting common mistakes. Whether you're using a wearable pump or a traditional electric pump, getting the right fit can make a big difference.

Why Flange Fit Matters for Comfort and Output

A flange that is too large can pull in too much areola, causing pain and reducing milk transfer. A flange that is too small can cause friction and block milk ducts. Flange inserts help customize the fit without buying a whole new pump.

When the flange fits correctly, your nipple should move freely without rubbing the sides, and you should feel a gentle tugging, not pinching. This not only improves comfort but also helps you express more milk in less time.

• Measure your nipple diameter before pumping, not after, as stimulation can change size.
• If you're between sizes, it's often better to go slightly larger and use an insert to fine-tune.

Step-by-Step: Using a Flange Insert

Start by washing your hands and ensuring the flange insert is clean. Most inserts are made of soft silicone and can be sterilized according to the manufacturer's instructions.

Align the insert with the opening of the breast shield and press it in until it sits flush. Make sure it's secure so it doesn't move during pumping. Then, center your nipple in the tunnel and begin pumping at a low suction level to test the fit.

• If you feel pain or see excessive areola pulled in, stop and re-evaluate the size.
• Replace inserts if they show signs of wear or deformation.

Steps to a Perfect Flange Insert Fit

1. Measure Your Nipple: Use a ruler or a nipple sizing card to measure the diameter of your nipple at the base, before pumping. This ensures you select the correct flange size. Checkpoint: If you're between sizes, choose the larger base flange and use an insert to adjust.
2. Select the Right Insert Size: Flange inserts come in different sizes to reduce the tunnel diameter. Match the insert size to your nipple measurement to achieve a snug but not tight fit. Mistake to avoid: Choosing an insert that is too small, which can cause friction and reduce output.
3. Insert and Align: Place the insert into the flange tunnel, pressing until it's flush. Ensure it's centered so your nipple is aligned properly. Checkpoint: The insert should not move when you gently tug it.
4. Pump and Adjust: Start pumping at a low suction level. Observe your nipple: it should move freely without rubbing the sides. If you feel discomfort, stop and re-evaluate the fit. Verdict: A correct fit should feel comfortable and allow efficient milk flow.

Flange Options That Work with Inserts

• ComfortFit® Breast Pump Flanges for Signature Pro and Smartpump: Lansinoh® Breast Pump Flanges ensure an ideal fit to maximize your pumping efficiency. Compatible with all Lansinoh® pumps, ComfortFit® Flanges have soft, flexible edges for comfortable pumping and a secure seal. BPA and BPS Free. These flanges are designed to work with inserts, offering a soft, flexible edge that enhances comfort and helps maintain a secure seal for efficient pumping.
• Thrive 2-in-1 Breast Pump Wearable Cup Flanges: A spare set of parts when you need them! Great to have on hand when you’re pumping away from home and need an extra set of clean parts. Or keep it on hand to replace parts that wear over time. Having spare wearable cup flanges means you can keep a set with inserts ready, so you're never without a comfortable fit when you're away from home.

Using a breast pump flange insert is a simple way to improve comfort and output. By measuring correctly and following these steps, you can make pumping more efficient and pleasant. Remember to check your inserts regularly for wear and replace them as needed.