Universal pumping system is easy-to-use. Select double or single pumping. Long, flexible tubing gives mothers greater mobility. Complete with all accessories needed to express including manual breast pump, two personal fit breastshields, 2 valves, 4 membranes, piston cylinder, pump connector, classic Barrier filter, 2 tubes, 2 collection containers, 2 lids, 1 container stand, instruction booklet, breastfeeding information guide. Some assembly required.