π-RING for wrist
Size : 
S (158mm), M (177mm), L (198mm)
Materials : 
Special compound metal powder, YMS π ceramic powder, IT π ceramic powder, PVC, PA, Permanent magnet
π-RING for ankle
Size : 
M (223mm), L(263mm)
Materials : 
Special compound metal powder, YMS π ceramic powder, IT π ceramic powder, PVC, PA, Permanent magnet
π-RING for neck 
Size : 
635mm
Materials : 
Special compound metal powder, YMS π ceramic powder, IT π ceramic powder, PVC, PA
π-RING for waist
Size : 
M (1020mm)、L(1120mm)
Materials : 
Special compound metal powder, YMS π ceramic powder, IT π ceramic powder, PVC, PA
*1 year warrantee from the purchase.
*Color of gold type shall change during the use without effect of the quality.