The difference with traditional cervical traction: The traditional traction treatment is performed through the traction bed or sling in the hospital, which is expensive and restricts us greatly in the treatment process. New generation three-power cervical retractor with air bag support, watch TV, do housework, work from home. Difference with the traditional cervical retractor two: working principle: through the upward 20 degrees of arc thrust, open the intervertebral space, protruding the compression of the nerve disc to restore the original position, relieve the compression. It is not conventional reverse traction or straight traction. This is the opposite of cervical curvature. You may feel some pain, which is normal. Targeted Hyperthermia: When you choose to use a USB heating pad, the Neck heating pack provides comfortable hyperthermia that helps with blood circulation and soothes nerves and neck pain, ideal for neck pain, sprains and strains, muscle pain, post-surgery rehabilitation and neck injury support. It can be used in the office, at home and while traveling. It is especially suitable for students, teachers, office workers and the elderly who are prone to neck pain. Suitable group + Reasonable effect after use: Measure the neck before purchase. Height range: 3.2 to 4.7 inches, neck circumference: 13.7 to 17.5 inches. Designed for regular neck sizes, not for thick necks. Using 15-30 minutes a day for a period of time can relieve symptoms such as nerve compression and cervical spine pressure, dizziness, limb weakness, hand numbness, and nausea. It is ideal for neck soreness, sprains and strains, muscle pain, postoperative rehabilitation and neck injury support. It can be used in the office, at home and while traveling. It is especially suitable for students, teachers, office workers and the elderly who are prone to neck pain. Suitable group + Reasonable effect after use: Measure the neck before purchase. Height range: 3.2 to 4.7 inches, neck circumference: 13.7 to 17.5 inches. Nausea and other symptoms.