The effect of the product could be seen only after a continuous use of around 20 days
Magnetic therapy neck spontaneous heating headache belt neck massager material - magnets of knitted fabric colour - black high elastic belt, soft senior leather cloth, good elastic, wear comfortable, paste and firm, changeless form middle layer - inlaid high penetration 5pcs permanent health magnet innermost layer - adopts the most advanced technology condensate to energy reactor for the polymer composite negative ions far infrared fabric layer release far-infrared wave with the wavelength of micron, to relieve tension, active collaterals and improve the microcirculation of human body. Order status to check your order status go to your order track package see complete tracking history "amazon return policy" intimate apparel and personal care products (shapewear, ear plugs, anti snoring mouthpiece, nose clips, nasal strips, medical accessories) can be returned only when the original packaging and tags are intact (not even tried, nor opened the seal. In case of not required any more). Return on these items is conditional due to hygiene reasons. Return facility is available only via self-returns. Return pick up facility is not available. On your returns the shipping charges are not refunded. Items that you no longer need must be returned in new and unopened condition with all the original packing, tags, inbox literature, warranty/guarantee card, freebies and accessories. Non-returnable items are marked on the product detail page. Check with amazon. In for a list of non-returnable items.