1Support arch of foot, disperse pressure on the sole, assist body to balance force, prevent valgus sprain, and correct fallen arch. 2Sole has a shockabsorbing heel pad, and pad surfaces is a sweatabsorbing velvet surface, effectively absorbs shock, absorbs sweat and deodorizes. 3Position of foot center is raised, massage foot center to relieve pressure and soreness of foot. 4Highelastic silicone cushioning heel protection, relieves weightbearing pressure of heel. 5Helps stabilize the foot in the right position and adjust your body to normal alignment.