Nuliie 10PCS Flange Sizing Kit 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps, Silicone Flanges Insert for Momcozy/Spectra Electric Breast Pumps, Pumping Essential Kit for Moms Size:24 mm 8PCS for 27 mm shields Simply press the suction cup

Simply press the suction cup onto the surface and activate the vacuum mechanism to create a secure hold

The exterior features back zippered pocket

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Nuliie 10PCS Flange Sizing Kit 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps, Silicone Flanges Insert for Momcozy/Spectra Electric Breast Pumps, Pumping Essential Kit for Moms Size:24 mm 8PCS for 27 mm shields Simply press the suction cupProduct Overview Brand: Nuliie Special Feature: Lightweight Material: Silicone Included Components: 13 15 17 19 21mm Flange Inserts (10PCS), Cleaning Brush, Nipple Ruler * 1PCS Material Type Free: BPA Free Product Features [HIGH COMPATIBILITY] Nuliie flange sizing kit 13 15 17 19 21mm (10pcs) fit most 24mm electric and manual wearable breast pumps. It will reduce the 24mm shield nipple tunnel down to correct size. Note: Not compatible with 27 28mm