Product material: cotton fabric + PP plasticCurrent/Voltage: 5V/2AHeating method: USB (rechargeable treasure / mobile phone charging head available) Heated gear: hot compress 45-55-65 third gear temperature adjustmentHeight speed: 5-speed height adjustment for front supportPacking size: 25*19 5*22cmDefault packing method: non-woven bagProduct net weight: 420g Product gross weight: 440gProduct list: neck brace set*1, USB cable*1, English manual*1FeaturesRemovable and adjustable fixed thermal traction, 60% more tractionUsed for cervical lordosis traction correction, straightening, anti-arch, cervical spinal canal hyperplasia, stenosis pain, etc The hot compress can promote blood circulation, help water and inflammation of the cervical spine, nerve root, joint capsule, muscle and other tissues to calm down, and prevent various diseases of the heart middle age and elderly Protect the sensitive front parts of the neck from compression, adjust traction and fixation