The Swing Breast Pump from Medela is the only single electric, personal use pump with breakthrough 2-Phase Expression Technology, designed to get more milk in less time. First researched and developed for hospital Breast Pumps, 2-Phase Expression is an advanced pumping pattern that mimics the baby's natural pattern. No guesswork, no worry - simply adjust to your comfort and let the pump do the work. With an included belt clip and shoulder/neck strap, as well as a compact design that allows it to fit easily in a purse or briefcase, you can use the pump anywhere! The massaging SoftFit breastshields offer comfort, while the adjustable speed and vacuum provide efficiency. Check out our full line of Medela Breast Pumps .