Key features

• •TOVVILD 15mm 17mm inserts (4pcs a Pack) to compatible with 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 Momcozy S9/S12/S9 Pro/S12Pro , TSRERE, Medela, Bellababy Wearable Breast pump 24 mm cups (not for 27 mm cups) Also fits freemie 25 mm cup to reduce its nipple tunnel.
• •If your nipple rubs or feels squeezed in the flange channel, the flange size is not appropriate, and you need to replace the flange insert with the correct size.