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Breast Shields/Flanges

A breast shield is the breast pump component that positions directly over the nipple to form a vacuum seal over the areola. The vacuum created by the pump’s suction draws the nipple into the breast shield tunnel, mimicking an infant’s rhythmic nursing pattern. During breast pumping, the breast shield is the apparatus that secures over the breast for consistent suction and release.

Breast Pump Flange Size Chart
December 22, 2017

Breast Pump Flange Size Chart

Choosing correctly fitting flanges, also known as breast shields, is an imperative step when you first begin to use your breast pump. Breast pump flanges fit directly over your nipple to form a seal around the areola, which creates a vacuum that gently draws your nipple into the tunnel for milk extraction.

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Breast shields are also referred to as flanges, and they are available in a variety of sizes. It is very important to select the proper size of breast shield to ensure that you don’t experience any discomfort while pumping. Medela PersonalFit Breastshields are available in 24mm-36mm. Lansinoh offers the Affinity 30.5mm Comfort Fit Flange with soft flexible rims to ensure a comfortable fit and secure seal.

If you do experience discomfort while pumping, shop our nipple care. Skin therapy solutions can soothe and heal the skin around the nipple. Nipple shields can help with latch issues, inverted nipples and problems with overactive let-down.