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 magnet Innermost 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 cold