Features： 1、Knob Adjustment: Ceramic neck traction device is designed with two knobs, the front knob can adjust the height of the neck support, and the rear knob can adjust the tightness. 2、Keeping Balance: The cervical neck traction device is made of a steel frame, with simultaneous traction on both sides to keep balance. 3、PE Plastic: The cervical retractor is made of PE plastic material, which is light in weight, the breathable material is not stuffy, and can be worn for a long time. 4、Strong Practicality: Cervical collar can be used to support the cervical, preserve the cervical, fix cervical fractures, and make the cervical comfortable . 5、Small Lightweight: Neck pain relief device is light in weight and will not put extra cervical pressure on the cervical spine. Specification： Item Type: Cervical Neck Traction Device Material: PE Plastic Product Size: (Manual Measurement Has 1-2cm Error) Approx. 61 x 56cm / 24.0 x 22.0in(upper and Lower Circumference) Height Adjustment: Before Adjustment:Approx. 15.5 x 13cm / 6.1 x 5.1in Maximum Adjustment:Approx. 19.5 x 17cm / 7.7 x 6.7in Package List： 1 x Cervical Neck Traction Device