Ameda Dual HygieniKit Milk Collection SystemAll Ameda HygieniKits are uniquely designed to help protect expressed milk and the baby from bacteria, mold, and viruses. Ameda has the worlds only breast pump with a lab tested, FDA approved, proven protective barrier. Proven Airlock Protection means that while a mother pumps Ameda's diaphragm prevents the air from the pump motor from coming in contact with the expressed milk. As a result the narrow tubing never needs to be cleaned. Dual HygieniKit