If your breast pump flange is too big or too small, it may make pumping uncomfortable and also may affect how much breast milk you obtain. A well-fitting flange will enable your nipple to move freely inside the flange without rubbing awkwardly against the edges. It’s also important to wear the right size flange because it will help you collect the largest amount of breast milk you produce.
How can you tell if your breast pump flanges are too small or large? Some signs include if your nipples barely fit in the flange while you are pumping, or if one or both nipples are rubbing against the sides of the flange. These signs indicated that your flanges are too small. If you lose suction while pumping or if your nipple size is smaller than the diameter of a pencil eraser then your flange may be too large. A flange that is too large can cause nipple abrasion and damage. In this case you will want to invest in a smaller flange. It is a good idea to check the flange sizes before you pump for the first time so you can avoid any nipple discomfort or damage.
Most pump companies have several sizes to choose from, so don’t worry if the flanges included with your breast pump are not a perfect fit. All pumps are sold with standard size flanges so you may have to contact the pump company to find out where to purchase the correct flanges separately. Typically the cost of the flanges are about $10 and well worth the investment.