Medela 2-Phase Expression® Technology is research-proven for more milk in less time, allows moms to change back & forth from stimulation to expression. Customized double or single pumping with adjustable speed and vacuum control for Daily Use. Includes integrate pump and workspace, removable cooler bag with ice pack, double pumping kit with PersonalFitTM breastshields, extra bottles and lids, 9 volt AC adapter and battery pack, Breastfeeding Information Guide with valuable tips and hints.12" x 11.75" 8"D.