Food-grade Silicone - Momcozy breast pump accessories are made of soft food-grade silicone, they are easy to remove and clean while maintaining a good seal to achieve the best suction. Max suction value range: 280300mmHg. Momcozy Wearable Breast Pump - silicone valve helps no milk leakage. The Momcozy breast pumps have a capacity of 180ml, and the container is marked with a tick mark. The recommended optimal breast pumping volume is 120 ml. Portable breast pump suck every drop of breast milk. Measure correctly and choose the right flange size to help breast milk flow smoothly. Low Noise - Innovative pumping technology, the sound is less than 55 dB when used, and it will not disturb a sleeping baby. Compared with the touch screen, the physical buttons have a longer service life and are less likely to be damaged. The built-in bra adjustment buckle helps to improve Wear your breast pump well. Function Upgrade - Momcozy breast pump battery capacity is increased to 1200mAh, and the compact & portable pump allows moms to breastfeed anytime, anywhere. After fully charged, it can be used for about 80 minutes/4-6 times, and the automatic shutdown function every 20 minutes helps moms suction milk comfortably. Product Description Momcozy Disposable Nursing Pads Momcozy Lactation Massager 21mm Flange Insert for Momcozy Wearable Breast Pump 180ml Milk Collector Cup for Momcozy Wearable Breast Pump 27mm Flange for Momcozy Wearable Breast Pump Duckbill Valves & Silicone Diaphragm for Momcozy S9/S12 Soft material Food-grade Silicone Size 21mm 180ml 27mm