Package Content Two full sets S12 proS9pro breast pump parts including 24mm flange2pcsmilk collector cup 2pcsduckbill valve2pcssilicone diaphragm2pcs linker2pcs wearable breast pump replacement accessories provide a softtouch for mothers and helps with soreness and swelling Compatible Model The Full Set Milk Collector Cup Compatible with Only Momcozy S12 ProS9 Pro breast pumping Not for S12S9 and other breastpumps please check your model before purchasing Not original accessories Made by IVARONAL Closed System No Milk Backflow the breast pump replacement parts are designed with dual channel antibackflow design gas and milk separated completely knocking over not pollute the motor no milk spilling and wasteThe advanced closed system design ensures 100 leakproofing No Gap NonLeakingThe silicone diaphragm without gap on the top while the duckbill valve design allows breast milk to flow in one direction effectively preventing leaks and achieving optimal suctionThe soft silicone shields lay smoothly on the breast to ensure maximum comfort and the antibackflow and antioverflow design provides better milk flow Comfort MaterialEasy Cleaning BPAfree made of foodgrade silicone materialsafesoft and odorlessensuring safety for both you and your baby Washing M5 pump parts after each use with warm soapy water and rinse wellPlease use boiling watersteam with a temperature of 100212for 510mins