Features: It is made of food grade liquid silicone. Non-toxic, tasteless, free of impurities and soft, no sharp angles, no harm to the baby. Soft suction nozzle design is safe and no stimulation. The spherical block design is not easy to damage the nasal mucosa of the baby, and the suction can mediate the size. Hose cleaning rod, with brush head, turn to cleaning is more clean.