Pump on the go with Dr. Brown’s Auto Adapter for the Dr. Brown’s Customflow Double Electric Breast Pump. Bring this breast pumping essential on the ride to work, on road trips, or when running errands for convenient pumping. Tested specifically with the Dr. Brown’s Customflow Double Electric Breast Pump. Do not use while driving. A great car adapter for breast pumps, this Auto Adapter is compatible with most vehicles with a 12-24V socket, allowing you to use your pump while parked or when riding in the passenger seat towards your next destination.