Model:B5615DF69184GH587 Intelligent uniform inflation, 1-30 gear inflation; Cotton lining, comfortable, dry and breathable; Two styles to choose from: Type A - 44cm in length, Type B - 47cm in length; Width before inflation: 9.5cm NECK TENSION RELIEF: The Air Collar neck traction machine is designed to reduce any pressure on your nerves by encouraging improved posture and stretching the neck. If you suffer from a stiff neck, pinched nerve, or sore shoulder muscles, use it for just minutes a day to experience real results. Increase flexibility & range of motion with at home neck traction. FULLY ADJUSTABLE: This cervical traction unit is easily adjustable. You can control the pressure of the back air-bladder to gently lift the user's cervical spine using vertical air columns. NATURAL REALIGNMENT: When using spinal decompression devices, muscles stretch to free nerve root tissue and allow vertebral disc to realign into the natural 20 degree curve of the cervical spine. EVERYDAY RELIEF: Standing, sitting, and working in the office for daily, extended periods can cause muscle tension, stiffness, and fatigue. Regular use of cervical traction equipment can relieve the stress caused by uncomfortable, repetitive positions. Reminder: This product can not replace the medicine, as well as the correct diagnosis and treatment of the doctor.