Premium value cervical (neck) traction kit that fits to any door. For the effective relief of neck pain. Adjust the amount of traction by adding or reducing amount of water in the bag. Ideal for home use & should fit almost any door. To relieve & prevent neck ache caused by degeneration, spinal stenosis & (prolapsed disc). Cervical degeneration Osteoarthritis of the neck Stiff neck Neck Muscle strain Spondylitis As we get older the (inflammation of the neck joints). This alone can produce neck pain, with pain sometimes referred to the shoulder & arm. Further disc degeneration can cause irritation of nerve roots in the neck that can also cause neck pain, shoulder pain & arm pain. works on the principle that a mechanical traction force applied to the neck can help to relieve the symptoms caused by a loss of disc height. The Overdoor Traction Kit is a simple & effective method of applying Cervical traction in the home or office environment as it works over any door. A 20lb water bag acts as a traction weight, using a simple pulley. This is attached to a head halter that fits snugly under the jaw & back of the head & provides a gentle sustained traction force in an upward direction. Not only does the sustained traction have the effect of reversing the loss of disc height, but it also helps to relieve painful muscle spasm & restore normal neck movement.