Material: Pu, Tpu, cotton flannel + Sbr front support bracket.Used to relieve muscle tension and minor neck injuries, and support the neck and head. It is suitable for long-term use of computer or mobile phone; unable to concentrate after working for a long time; poor blood circulation, stiff neck, etc. Fix the cervical spine in a proper position and change the bad posture to maintain the normal posture. By supporting the neck muscles to rest, relieve muscle spasms and relieve local pain.Limit excessive movement of the neck to maintain local stability, reduce the traumatic inflammation caused by mutual stimulation and friction between the spinal cord, nerve roots, blood vessels and articular surfaces, and promote its dissipation and absorption. Relieve and improve the pressure state of the cone space, reduce the strain and degeneration of the cervical intervertebral disc, help to recover as soon as possible, and avoid possible trauma.Correct the internal and external balance of the cervical spine, prevent facet joint disorder, dislocation and dislocation, etc., to maintain the cervical spine sequence and the stability of the vertebral body and joints, and strengthen the support of the neck.