Made of PU. The perfectly curved design of the neck and shoulder relaxer matches the natural curve of the human spine, helping your spine flex, stretch and relax, relieving headaches, soft tissue problems, TMJ, migraines and common neck and spine related problems joint pain. Get relief from stiffness and neck pain in just 10 minutes a day. It offers vertical and horizontal support while the curvature of the neck support pillow stretches the spine to correct the posture and relax the muscles. Can customize your logo on it.