Gowing Wearable Breast Pump Accessories, more fresh breast milk to baby, more sleeping time for mom. Comfort & Skin friendly: these wearable breast pump parts are made of free, silicone which provides mom the maximum comfort breastfeeding experience. Closed System, No Milk Backflow: the breast pump replacement parts are designed with dual channel anti-backflow, gases and milk separated completely, knocking over not pollute the motor, no milk spilling and waste. Leakproof: anti-backflow design features on silicone diaphragm makes milk does not reflux, long use; anti-overflow design features on valve makes milk only goes up, clean and pollution-free. Color: As shown Material: PP Package Contents: 8* Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.