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: 9.5cmNECK 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