The history of the 24mm pump flange is closely linked to the evolution of breast pump technology. Breast pumps have been around for over a century, but significant advancements began in the 20th century. Early breast pumps were manual, cumbersome, and often inefficient.
In the mid-20th century, electric breast pumps were introduced, revolutionizing breastfeeding by making it easier and more efficient to express milk. However, these early models were still quite rudimentary in design.
The 1980s and 1990s saw significant improvements in breast pump technology, with companies like Medela and Ameda leading the way. During this period, a range of flange sizes was developed to accommodate different nipple and breast sizes. The 24mm flange size became a standard option, as it was thought to fit a significant portion of women effectively. However, over time, it has become evident that the 24mm size is often too large for many women. Research and user feedback have shown that the majority of women actually require smaller flange sizes for a proper fit and comfort.
The predominance of the 24mm flange as a default size reflects an initial lack of understanding and support for the anatomical diversity among breastfeeding mothers. Many women experience discomfort and inefficient milk expression due to using flanges that are too large. This mismatch can lead to reduced milk supply and a negative breastfeeding experience.
Today, there is a growing awareness of the need for a wider variety of flange sizes that truly support the diverse needs of breastfeeding mothers. Companies are increasingly offering smaller flange sizes and more customizable options to ensure a proper fit for all users. This shift towards inclusivity and better support for all anatomical variations marks a significant improvement in the breast pump industry, aiming to enhance the breastfeeding experience through better technology and design.
What pump do you have? What size flange are you using? The answer can make a huge difference in pumping success.
Not all pumps are created equal. Prior to the ACA, there were few pump choices. Once laws said people needed to be provided with a breast pump, and insurance would fit the bill, lots of companies flooded the market with pumps. Not all of them are good, and some will even sabotage your supply. You want a pump with a good motor in it that has lots of variability in the cycle (how fast or slow it pumps) and suction (how strong it sucks).
You also need to be mindful of the flange you’re pumping on. Most companies will send a standard 24mm flange. Sometimes they’ll send a larger size as well. In reality nipples, and thus flanges, are not one size fits all. And in my practice I hardly EVER use the 24 or bigger flanges. For almost all of my families we’re sizing down. Some times significantly smaller.
Flanges are the horn shaped part that actually touch the breast. The fit of the flange can make or break your pumping experience. Too small and friction can cause pain and even damage (and pain makes it difficult for milk to let down). Too large and the breast may not be stimulated well, which inhibits your let down to have milk flow. When too much areola is pulled into the flange, the tissue swells around the nipple pores and can prevent milk from efficiently emptying from the breast, resulting in plugged ducts, pain, tissue breakdown, and eventually a reduced milk supply. Using too large of a flange from the beginning may even prevent you from bringing in a full milk supply. Do you ever pump for 20+ minutes and still feel like there’s milk in there? Most likely too large of a flange. The stimulation from the pump is triggering you to make more milk, but the size of the flange is preventing you from emptying that milk efficiently. Poor flange fit can also impact the suction of your pump and how well it functions with your body. If you have the suction all the way to the highest level and aren’t emptying well, you flange is too big.
Flange fit tips:
Some of the flanges I tried
🗝Flange fit isn’t based on your breast or areola size, it is JUST the size of the nipple and how it changes with suction. Some nipples are dense and don’t stretch much. Some are super elastic and swell a lot. How your nipple responds to suction can make a difference in which flange you select and if other products are needed to happy pump
🗝Proper fit isn’t as simple as measuring your nipple, but it’s a start. See a trained IBCLC to help if you haven’t found the right fit or are struggling with poor output, pain/damage, or plugged ducts
🗝A small amount of space around your nipple in the flange tunnel is good. There should be no space around the areola or in the larger bell part of the flange. If your breast tissue recoils back into the horn part of the flange with every cycle, the flange is too large. If the tissue is white where the tunnel meets the horn, the flange is too small
🗝Pain or blanching means it’s the wrong size
🗝Nipples rubbing against the sides of the flange tunnel mean fit needs to be improved and there is a risk of pain and damage
🗝There should only be a small amount of areola pulled in the flange tunnel space. The bell or horn part will have most of the areola held back so it doesn’t get pulled into the tunnel
🗝The nipple tip shouldn’t hit the back of the flange. This means you have an elastic nipple. Sizing up isn’t necessarily the right answer. Using a pump insert, cushion like @beaugenmom or @pumpinpalofficial may be a better solution
🗝Evaluate as you pump. You can changing flange size mid-pump to improve comfort if you’re between sizes. You may also need to change the flange size the longer you pump. Our nipples can become more elastic and larger or smaller with time.
🗝Every nipple is unique and each side may use a different size (or shape/brand!). There are all kinds of flange sizes, inserts, and cushions to improve the pump experience
