The NUK Expressive Double Electric Breast Pump is designed for daily, frequent use at home or at work. It is scientifically designed to deliver similar performance as the leading pump at a much lower price. The pump has 32 custom settings to help you achieve maximum milk flow plus time-saving efficiency. The pump also features easy to hold breast funnels with long tubing and a built-in handle on the motor unit for portability. A digital display with push button controls clearly exhibits your selected settings, plus features a memory button to save your preferred settings if you need to stop pumping for a few minutes. The pump is AC powered, and is easy to assemble & clean. While the NUK Seal n Go Breast Milk Storage Bags safely and securely store precious breast milk in either the refrigerator or freezer until you are ready to feed your baby. Designed for collecting, storing, and freezing breast milk, these bags are 100% leak-proof with double zipper seals. They are also freezer safe and self-standing, so easily sit or lay flat on your freezer shelf until ready for use. The oxygen barrier permits breast milk to stay fresh during storage.