Designed with lactation consultants, Evenflo's advanced double electric breast pump includes features new moms want. This breast pump will help maximize your milk output, is comfortable and gentle on your breasts, and is quiet and portable, so you can discreetly pump anywhere. To maximize your milk output, use the independent speed and suction controls on your pump. These controls allow you to mimic baby's nursing pattern and are designed to help you have multiple milk releases (letdowns), ensuring you get the most milk out of each pumping session. Multiple flange sizes are included with this breast pump. The flange is the part of the pump you place against your breast. A proper flange fit is important – it not only gives you a comfortable, more gentle experience, but also means you'll pump more milk. If the flange does not fit properly, you may experience discomfort and/or a decrease in your milk expression. The closed system design makes this pump hygienic, easy to clean, and helps prevent milk back up in the tubing and pump motor, keeping parts clean, dry and functioning properly.