How to Use Flange Inserts with the BabyBuddha Wearable Pump for a Comfortable Fit
By BabyBuddha | Published: 2026-08-25
Category: How-to Guides
Learn how to install and use BabyBuddha flange inserts for a custom, comfortable fit with the wearable pump. Step-by-step guidance and tips included.
Getting a comfortable, efficient pump session often comes down to one thing: flange fit. If your nipple rubs, pulls, or feels too roomy, you may not be emptying effectively. BabyBuddha flange inserts offer a simple way to customize the fit of your wearable pump without buying a whole new set of flanges.
In this guide, we'll walk you through how to choose the right insert size, install it correctly, and troubleshoot common fit issues. Whether you're between sizes or dealing with nipple discomfort, these tips will help you get back to comfortable pumping.
Why Flange Fit Matters
A proper flange fit is essential for both comfort and milk output. When the tunnel is too large, your areola gets pulled in, causing friction and reducing stimulation. Too small, and your nipple can rub against the sides, leading to soreness and even blocked ducts.
Flange inserts solve this by reducing the internal diameter of a 24mm flange to a smaller size, like 19mm or 15mm. This lets you fine-tune the fit to match your nipple measurements, especially if you're between standard sizes or experience changes during your pumping journey.
- Measure your nipple diameter before pumping to find the right insert size.
- Inserts are especially useful if you have elastic tissue or nipples that change size during a session.
Choosing the Right Insert Size
Start by measuring your nipple diameter at the base, about one minute after a feeding or pumping session. The flange tunnel should be 1-2mm larger than your nipple. For example, if you measure 17mm, a 19mm insert is likely a good match. If you measure 20mm, a 21mm insert would be ideal.
BabyBuddha offers flange inserts in 15mm and 19mm sizes, which fit both the wearable pump and standard 24mm flanges. If you need a different size, consider the 24mm Flange Kit or the EasyFit Flange Kit, which includes multiple sizes. Always double-check your measurements, as a too-small insert can cause pinching.

- Use a ruler or measuring guide to get an accurate nipple diameter.
- When in doubt, size up slightly—a little extra room is safer than too tight.
How to Install Flange Inserts in the Wearable Pump
Installing a flange insert is quick and easy. First, make sure the flange and insert are clean and dry. Hold the flange with the tunnel facing you, then gently press the insert into the tunnel from the back (the side that connects to the pump). The insert should sit flush, with the rim facing outward.
For the BabyBuddha Wearable Pump, the insert fits directly into the flange tunnel. If you're using the Hands-Free Breast Pump Collection Cups, the process is the same. Press the insert in until it snaps into place, then give it a gentle tug to confirm it's secure. If it moves, remove and reinsert, ensuring it's fully seated.

Once installed, attach the flange to the pump and start your session. You should feel a snug but comfortable seal. If you feel any pinching or the insert shifts during pumping, remove the flange and recheck the fit.
- Always align the insert's rim with the flange opening for a secure fit.
- Clean inserts after each use with warm soapy water and let them air dry.
Troubleshooting Common Fit Issues
If you experience discomfort even with an insert, check that the insert is the correct size and properly seated. Sometimes the insert can sit slightly crooked, causing uneven pressure. Remove and reinsert, ensuring it's centered.
If your nipple touches the end of the tunnel, you may need a shorter insert or a different flange style. The BabyBuddha 3.0 Primary Portable Breast Pump with EasyFit Kit offers a different flange shape that might work better for some users. Also, consider using a lubricant like coconut oil on the tunnel to reduce friction.
If you notice reduced milk output, the insert might be too small, compressing your nipple. Try a larger size or remove the insert and pump with the standard flange to compare.
- Keep a spare set of inserts on hand in case one gets lost or damaged.
- If you're between sizes, try both and see which feels more comfortable over a full session.
Finding the right flange fit is a personal journey, but flange inserts make it easier to customize your BabyBuddha wearable pump for maximum comfort and efficiency. By measuring carefully, installing correctly, and troubleshooting as needed, you can enjoy more comfortable pumping sessions and better milk removal. For more tips, explore our other guides on flange sizing and pump care.



