Amazon.com : Replacement Valve and Membrane Compatible with Medela Breastpumps (Swing, Lactina, Pump in Style), 4X Valves/6x Membranes, Part #87089; Repaces Medela Valve and Medela Membrane : Breast Feeding Supplies : Baby
Amazon.com : [4 Pack] Nurse & Nourish Membranes for Medela Personal Fit Flex Connector Used with Medela Pump in Style Pump, Medela Freestyle Flex Breast Pump, Medela Swing Maxi Pump, Medela Pump