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• ​Function: Vital one-way silicone valves that control vacuum seal and suction power during pumping while ensuring expressed milk flows smoothly into the bottle without backflow.
• ​Design & Clarity: Features a compact, clear, transparent duckbill design with a reinforced circular base that securely snaps onto standard breast pump flanges or connectors.
• ​Material: Crafted from 100% premium, food-grade transparent silicone. Completely free from BPA, PVC, and Phthalates, making it safe and non-toxic for daily baby care.
• ​Maintenance: Easy to clean with warm, soapy water. Avoid inserting sharp brushes inside the flexible duckbill tip to prevent micro-tears. Replace every 1 to 3 months to maintain maximum pump suction efficiency.