[Description] The loop of the strongest magnetic force of 200 millitesla, the largest magnetic force in Japan, works on stiffness! Loops of magnetic force improve blood circulation in the neck and shoulders and help with stiffness. Six magnetic grains with a maximum magnetic flux density of 200 millitesla are built in. The entire loop radiates magnetic force with a maximum flux density of 55 millitesla. The magnetic force permeates widely from the neck to the shoulders. Safe design that disengages when excessive force is applied. Easy to put on and take off. Washable with water. Black 60cm Product size: 99mm x 20mm x 145mm