SYOSI Flange 17mm 19mm Inserts for momcozy S9/S12/S9pro/S12pro/Lansinoh/Bellababy Pump Parts Replace, Wearable Breast Pump Shield/Flange Insert to Reduce 24mm Down to 17mm/19mm, 4pcs

15mm 17mm inserts (4pcs a Pack) to compatible with for medela/ spectra / momcozy 24 mm breast shields. It will reduce the 24mm shield nipple tunnel down to 15mm/17mm/19mm/21mm. Adapt to changes in different physiological periods and express breast better.
Some mothers have the experience of nipple swelling while milking, the nipples will change at different times, so it is important to observe the size of the nipples during pumping. Choosing the right flange insert for pumping is more comfortable and efficient.
SILICONE MATERIAL: 100% BPA free, the silicone flanges are made of food grade silicone. It's safe, soft and odorless, nice pump parts replacement.
EASY CLEAN: Wash pump parts are easy to clean, after each use with warm soapy water, can be sanitized with water steam, boiling water or microwave-steam bags.
COMPATIBLE PUMPS: Compatible with for Momcozy S9/S12/S9 Pro/S12Pro , for Lansinoh, for Spectra, for MomMed Wearable Breast pump 24 mm cups (not for 27 mm cups) Also fits for freemie 25 mm cup to reduce its nipple tunnel.