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These are the replacement Membranes designed specifically for the Medela Sonata Breast Pump. This purchase includes a pair of membranes
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The Medela Sonata Spare Membranes are designed to replace worn, lost or broken membranes in the Medela Sonata Breast Pump. The membranes are made of silicone and are BPA free.
Medela Sonata Power Adapter
Medela Sonata Double Pumping Kit
Medela Sonata Spare Parts Kit