Included: 2 connectors that will fit any Medela PersonalFit breastshield, 2 valves and 2 membranes per pack.No breastshields are included. Only 2 connectors, 2 valves and 2 membranes.Connectors, valves and membranes are assembled as 1 piece.Valves and membranes can be dissembled from connectorsAll Medela bottles and breastpump kits are 100 percent Non BisphenolA (BPA) Items come in non retail poly bag