Model # 17101: The exclusive patented Ameda One-Hand Breast Pump -Single HygieniKit creates one of the most effective milk collection systems available. It helps mothers provide the purest milk possible to their babies. The kit's unique silicone diaphragm acts as a barrier, separating the user from the suction source. This helps ensure milk purity by preventing contaminants from coming in contact with collected breast milk, and prevents milk back-up so tubing and pump require little to no maintenance. It also easily converts to manual pumping with the One-Hand Breast Pump.