The Medela Pump in Style with MaxFlow technology is a hospital-strength double electric breast pump inspired by our hospital-grade Symphony pump. This powerful pump features built-in letdown and massage mode cycles that transition automatically. Clinically-proven to increase in milk volume of up to 11.8%*. An intuitive control panel lets you increase or decrease vacuum strength across 10 levels for maximum efficiency. Y-shaped tubing offers single- and double-pumping options. Included is (1) Pump In Style Breast Pump with MaxFlow Technology (4) 5 oz/150 mL bottles with lids (2) 21 mm PersonalFit Flex™ breast shields (2) 24 mm PersonalFit Flex™ breast shields (2) PersonalFit Flex™ Connectors with membranes (1) Complete tubing (1) Cooler (1) Cooling element (1) Microfiber bag (1) Battery pack (8 AAs not included) (1) Power adaptor