PERFECT FIT Pumping shouldnt hurt When pumping is uncomfortable or hurts it can suppress the amount of milk you are able to express To avoid discomfort and help you maximize your own milk expression finding the right flange fit is essential But one size rarely fits all That is why the AdvancedFit Flange System includes multiple quotvelvety softquot flange sizes so you can find the perfect fit Because your comfort is critical to a successful pumping session COMFORT IS KEY Since comfort can affect how much milk you express Evenflo Feeding designed their flanges with a quotvelvety softquot texture to give your breast a perfect seal and allow your nipple to slide in and out without the painful tugging and pulling effect that other flanges can cause keeping you comfortable while pumping COMPATIBILITY These AdvancedFit breast pump flanges work with any Evenflo Feeding Advanced Breast Pump Whether its the Advanced Single Electric Advanced Double Electric Deluxe Advanced Double Electric or the Deluxe Plus Advanced Double Electric these flanges will work with them all