Product Overview: The Medela Swing Flex 2-Phase Electric Breast Pump offers a comfortable and efficient pumping experience by mimicking a baby's natural sucking patterns. Key Features: ‣ 2-Phase Expression Technology: Simulates natural sucking rhythms for effective milk expression. ‣ PersonalFit Flex Breast Shields: Soft, flexible rims adapt to your breast shape for enhanced comfort and improved milk flow. ‣ Quiet Operation: Allows for discreet pumping sessions. ‣ Closed System: Prevents milk from entering the tubing, ensuring hygiene. Specifications: ‣ Material: BPA-free plastic.