Aoohe Headache Shoulder Traction Soft Device Air Cervical Neck Back Massager Features: Light weight and easy to use. Comfortable and non-threatening. Adjustable universal size for most men and women. Application: People who spend long time on the computers, cars This comfortable and easy to use neck cervical traction device elongates neck muscles, often resulting in rapid and prolonged relief from the soreness and irritation. Slowly increase pressure in order to enhance the effect of traction Inflation should be gradual and not excessive During the use of airbags, avoid contact with hard objects.Don't let the product close to high-temperature heat Package Includes: 1 x Headache Back Shoulder Pain Cervical Traction Device When finished using, push the blocker to the large end of the blocker holder and loose the air valve, should be released slowly.