1. Can prevent reverse flow2. Not easy to damage the nasal mucosa3. Can prevent cross infection4. Can effectively solve the infants nose breathing difficulties caused by too much.5. Nose USES the food grade silica gel， can let the baby feel soft and comfortable， not easy to resist， PP is more close to the skin than cold hard6. Replace with one-way valve mouth suck， parents don't have to be afraid of germs cross infection， gentle suction is easy to control7. Accumulator semi-transparent design， use more intuitive