Mii Hospital Grade Double Electric Breast Pump is equipped with settings for suction rate, is it also engineered for power and durability. The double pump has 9 settings each for suction velocity and intensity, as well as a timer and pressure sensor, to help Mom find settings that closely simulate baby’s feeding habits. It offers quiet functionality with effective results and the one size fits all soft cups are made from 100% food-grade silicone to be safe and flexible.