Maymom newly-designed flange inserts are compatible with Elvie Single/ Double Electric Wearable Smart Breast Pump. Use with Elvie 24mm Cup. Downsize 24mm to 21/19/17/15 mm. Sung fit and comfortable to use. Also compatible with Momcozy 24mm Cup( S9/S10/S12), TSRETE 24mm Cup, Medela PersonalFit Flex 24mm breastshield.
