The Cimilre Backflow Protectors are essential components designed to maintain a hygienic and efficient pumping experience. These protectors act as a barrier to prevent air, moisture, and breast milk from entering the tubing and breast pump motor, ensuring a closed system while pumping. Regular replacement is recommended to maintain optimal performance and hygiene. Key Features: Compatibility: Compatible with all Cimilre breast pumps, including the S6, S6+, S7, P1, and E1 models. Material: Made from BPA-free materials for safety and peace of mind. Design: Features a silicone membrane that fits securely into the backflow protector assembly. Maintenance: Easy to clean; dishwasher-safe (top rack only) or can be washed with warm, soapy water. What's Included: Two (2) silicone membranes Two (2) backflow protector tops Two (2) backflow protector bottoms