The new Medela Pump In Style® with MaxFlow™ with bag is ideal for moms who are always on the move. This easy-to-use breast pump uses a closed system, 2-Phase Expression Technology and MaxFlow vibrations. The system maximizes output and provide a hospital-grade pumping experience. Perfect for pumping on the go, this closed system breast pump includes a battery pack (batteries not included), cooler bag and carrying bag. For more information about the Medela Pump In Style with MaxFlow with bag, visit the Medela website.