... Material: Joint sponge, undercoat mercerized cloth, EPE, magnet, velour Magnet health care waist supportMaterial: Joint sponge, undercoat mercerized ... cloth, EPE, magnet, velourFunction: Built-in magnet can promote metabolism, improve circulation, speed up ... and badminton association and appointed as special products used by BOBBY ERTANTO, who was the double badminton ...