The Purely Yours Breast Pump is the only portable double breast pump that combines the legacy of hospital-proven technology with mom-friendly features. It's ideal for moms working full-time or for anyone who wants a quick, easy and effective breast pumping experience. >br> This piston-driven pump offers comfortable and efficient pumping. With the individually adjustable cycle and suction controls, you create a pumping experience that is most comfortable and effective for you. he closed system design of the patented Ameda HygieniKit Milk Collection System prevents milk and moisture from entering tubing, so there's no need to clean pump tubing! Features: Piston-driven Compact and lightweight - weighs only 1 pound Individually adjustable cycle and suction controls Unique design saves time - no need to clean pump tubing! Operates using 3 power sources - AC adapter, AA batteries or optional car adapter Includes the patented Ameda HygieniKit Milk Collection System*  Note: Unless otherwise noted, this product has not been evaluated by the Food and Drug Administration. Our natural products are not intended to diagnose, treat, cure, or prevent any disease.