1.Fabric1 : 54 percent nylon 37.4 percent polyester 8.6 percent spandex fabric12 : 88 percent naylon 12 percent spandex 2. This positions the head to reduce spine pressure, support the cervical spine, and help the neck's C -shaped curve. The company strong support for the cervical spine. The neck traction is durable and is not easy to deform, it is supported by gravity, it creates the amount of traction requirements according to your body weight. By bending your long -term head, sitting still for a long time, inappropriate sitting stance causes your hard neck pain. You need a simple and effective physical solution associated with consistent use to help alleviate neck pain and pressure, painful muscles. In just 10 minutes, comfort neck pain (it cannot be used as an ordinary pillow all night). Not for pregnant women, menstruation women, cardiac patients, diabetic patients 5. When you reach out, it stretch for vertical, horizontal support and neck attraction. Small portable neck and shoulder relaxant can be used in the house, office, travel. Only simple and comfortable on the couch, in bed, in a chair, in the car or the plane, sit even when working. But after getting used to it, you'll enjoy excessive comfort. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.