Food-grade raw materials that are safer than milk powder, BPA-free, environmentally friendly and tasteless, so mothers can use it with confidence. Double layer thickening, no burst bag 360° electron beam irradiation sterilization, no pollution residue. Breast milk can be stored directly without washing. The scale is clear and easy to store. 180ml is enough for a full meal for the baby! The inlet and outlet are separated design, which is hygienic and convenient, and can freely control the amount of breast milk poured out. Good sealing, can be closed with a light pressure. The milk bag will not leak easily and keep fresh for a long time.