DESCRIPTION: A replaceable valve and membrane assure efficient operation of your breast pump life and prolong its life. Made of safe BPA-free silicone. Elements for the hands-free double TWINNY electric breast pump (CAT.NO 1002) FEATURES: VALVE The valve is made of a safe silicone. It is responsible for proper milk flow while expressing and stabilisation of the product suction force. MEMBRANE The membrane is responsible for production of negative pressure required for milk expression. It prevents milk from entering the breast pump mechanism. SAFETY INFORMATION Check the product before each use. At the first sign of damage or wear - discard.We recommend keeping the packaging for information purposes. Keep the packaging out of the reach of children. Technical properties Content of the set: 1x membrane 1x valve Dimensions packaging size 0