Info taken from Amazon page. Never opened, still sealed. for allergy reasons, be aware I have cats .
Anti Backflow Valves Replacement Silicone Duckbill Valves for Breast Simple Installation and Easy Remove Breast Valves
Dr. Brown's Duckbill Valves for Breast Pump
Reliable Replace Silicone Duckbill Valves for Breast Pump Anti Backflow
4pcs Breast Pump Parts for eufy, Silicone Diaphragms & Duckbill Valves Wearable Breast Pump Replacement Accessories Compatible with eufy S1 Pro/S1/E10/E20
PumpMom Duckbill Valves for Spectra, Replacement Duckbill Valves for Spectra S1 S2 9 Plus SG Pumps (Not Original S2 Accessories) (6 Count)
Rengue Duckbill Valves for S21 Breastfeeding Pump, Silicone Diaphragm, Leak Proof Design, Compatible with S21 Wearable Pump Accessories for Moms Duckbill Valves for Breastfeeding
