Everything you need to start pumping: Includes tubes, bottles, membranes, breast shields and valves (breast pump not included) For single or double pumping: Moms don''t have to pump both breasts to use the Symphony Double Breastpump Kit. Symphony functions as a single pump if desired Includes 2 standard PersonalFit ™ (24 mm) breast shields: Allows you to pump in comfort Safely collect, store and feed breast milk: You can pump your breast milk and store in the same container Made without BPA: All parts that come into contact with breast milk are not made with BPA