Feature:Material :Magnets of knitted fabricColour:BlackHigh elastic belt,soft senior leather cloth,good elastic,wear comfortable,paste and firm,changeless formMiddle layer:inlaid high penetration 3Pcs permanent health magnetInnermost layer:adopts the most advanced technology condensate to energy reactor for the polymer composite negative ions far infrared fabric layerRelease far-infrared wave with the wavelength of micron,to relieve tension,active collaterals and improve the microcirculation of human bodyRelease anion to purify blood,to active cells and promote balancing of Body PHProtect the cervical, shoulder and vertebra inflammation, neck pain, tingling and other symptoms of coldPackage Included:1pc x Spontaneous Heating Magnetic Therapy Neck ProtectionNO Retail Box. Packed Safely in Bubble Bag.