1.Built-in 108pcs magnets and nano infrared thermal acupuncture dot matrix will release heat quickly with long lasting effect, effectively helping improve blood flow and promote blood circulation to relax muscle fatigue and relieve the pain associated with joint and back problems. 3.Come with an independent neck brace which contains 12pcs self-heating magnets, free to choose whether wear it or not, the warm fabric can further enhance the neck care. 2.Detachable 5pcs tough ABS shaping plates in solid construct will help distribute the pressure uniformly for your lumbar spine with strong fixation and reliable support to maintain a good posture and achieve some effects on body slimming.