With the emission of 9~10 micrometers of Photon Energy wave, they can revive the meridian, acupoint, reflective region and boost blood circulation and augment physiology on both feet. Like deep tissue massage,its effect relaxes muscles and eases sore after extended standing, hiking and exercising.
Operating instructions:1.Red is for women, Blue is for men.
                   2.Trim the soles according to your shoe size.
                   3.Use a bruch to clean the surface, then air dry in the shade.
Note: Do not soak or put in the washing machine.