Working theory 1.Adjust the control of the vagal nerve to gastrointestinal tract, inhibit the motility of the gastrointestinal , thus preventing nausea and vomiting. 2.By expanding the capillaries of the skin , to improve the microcirculation of body and increase the amount of oxygen to brain ,thus comes to the effect of refreshing your brain. Directions 1.Tear the protective layer,adhere the adhesive layer to the navel or the back of your ears. 2.One/two patch per time,according to your body condition,Painless to remove. 3.Attach 10 minutes before the travel ,the effect will last about 1-3 days .