The Deluxe Nurture III Double Electric Breast Pump has everything you need to express, store and transport your milk in one convenient package! The Nurture III Deluxe Double Electric Breast Pump, by Bailey Medical Engineering is a small, quiet, efficient breast pump that can be used for double or single pumping. Fully adjustable suction and manual cycling let you imitate your baby's variable nursing patterns. Many women prefer manual cycling because it gives them more control of the pumping process. You can change the cycle time as you are pumping to mimic the way your baby nurses and maximize your pumping efficiency. To create suction and cycle the Nurture III, you cover and uncover a vent on one of the collection bottles with your finger or thumb. It's a very small, easy motion and you do on one side, even when you're double pumping.