Medela Pump in Style Advanced is an excellent breast pump for daily use for the working woman.  I am using mine with my third child currently and it is still holding up very well. (I breast fed each of my children for one year.)  It is a dual, electric breast pump that has adjustment knob for the amount of pressure to be used.  It comes with wall outlet adapter, 4 bottles, a carrier, and a freezer pack for carrying milk from work to home. It is convenient and comes in a black case that looks like an over the shoulder bag.  You can order an adapter to use a battery pack with it, but I don't...