THe luna® Flange size guide
Why Breast Pump Flange Size Matters?
The flange is the breast pump part that comes in contact with your body when placed onto the breast and nipple, forming a vacuum seal with the areola.
The Luna® breast pump comes with multiple flange sizes and offer smaller inserts to customize the fit within the flange. This reduces the opening of the tunnel where the nipple enters and allows for a more comfortable and effective pumping experience but also helps with the prevention of breast inflammation also called Mastitis.
Flange sizes typically range from 13 to 27mm, depending on the brand. This measurement refers to the beginning of the flange tunnel, not the flange opening. The Luna® Pump includes a standard 24mm flange, a nipple ruler to help you find the right size and inserts ranging from 17mm to 21mm to accommodate a variety of nipple sizes.
How to Determine Your Wearable Breast Pump Flange Size?
To determine the best flange size for you, you’ll need to measure your nipple first.
The Luna® breast pump comes with an handy nipple ruler with holes to make measuring a breeze. Please note that your left and right nipples may have different sizes, so please measure them both to get the exact size of them.
You can also use a regular ruler or tape measurer before ordering.
Please follow our 3 easy steps to find the best size for you.
Step one
Stimulate your nipple to make it perk up.
Step Two
If you are using a ruler or tape measurer: Measure the diameter of your nipple in mm, from base to base. Do not include the diameter of your areola, only your nipple.
If you are using our nipple ruler: Place your nipple into the holes one by one to find out which one you can comfortably fit your nipples into, in a way that your nipple can be out through the hole totally, also the ruler can touch the areola at the same time.
Please note that your left and right nipples may have different sizes, so please measure them both to get the exact size of them.
Step 3
Use the table below to determine the correct flange size. It’s recommended to choose a flange size that is 1-3 mm larger than your nipple’s size. For example, if your nipple measures between 15-17 mm, we recommend a 19 mm insert.
Good To Know
What is the most average flange size?
The most common flange size is 24mm. Many breast pump brands, including MammaBump, offer a range of flange sizes (27mm) and inserts (15mm to 21mm) to accommodate diverse needs. It's important to remember that every woman is different. Breast sizes and nipple dimensions vary significantly. That's why it's crucial to measure your nipples and choose a flange that fits you comfortably and effectively.
Will correct flange size increase milk supply?
Yes, using the correct flange size can significantly impact your milk supply. A properly fitted flange ensures efficient milk pumping, which signals your body to produce more milk.
Can you put too much areola in a flange?
No, pulling too much areola into the flange can be uncomfortable and reduce milk output. It often indicates that the flange is too large. The ideal fit involves only a small portion of the areola being drawn into the flange tunnel.
What if you're in between flange sizes?
If you're between flange sizes, try using an insert first. Many brands, like MammaBump, offer additional inserts to help customize the fit. If you’re still between insert sizes, it's generally recommended to choose the slightly larger size.
Will My Flange Size Change?
Possibly! Your breasts may change between the third trimester and after giving birth. Also, your breasts may change through your breast pumping journey, so it's important to regularly check your flange size.