Our Bio-Frequency Patch contain L-theanine, high capacitance film, breathable fiber. It safely stores energy and elevates mood, naturally restoring the balance of the body's energy field to relieve stress, maintain stable mood, restore balance and optimize overall health. Its application method is very simple: clean and dry the skin of the arm, open the package to take out the patch, tear off the back film and stick the patch on the inside of the arm (the effect of this product can last 48 hours). Promotes balanced emotional and brain health. Helps relieve minor indigestion that accompanies daily stress.