They can help collect milk, bring more conveniences. Made of food grade silicone material, they are safe and durable as well as practical for use. Its anti backflow design allow you to collect milk in a more clean and easy way.
Valves Accessories Backflow Protector
Leak-Proof Backflow Valves Plastic Backflow Protector for Breast Pump Durable
Breast Pump Parts for Spectra, Duckbill Valves Tubes Backflow Protector Membrane
20 pcs Silicone Replacement Valves and Backflow Protector for
Valves Accessories Backflow Preventer