Product Overview: The Medela Freestyle Flex Dual Electric Breast Pump is designed for mothers seeking an efficient and convenient pumping experience, featuring a compact and lightweight design with 2-Phase Expression® technology. Key Features: ‣ Double electric pumping for more milk in less time. ‣ USB-rechargeable battery for portable use. ‣ PersonalFit Flex breast shields for enhanced comfort. Specifications: ‣ Bottle Capacity: 150ml ‣ Breast Shields Size: 21mm & 24mm