ProPosture(tm) Neck Exerciser - Easy to Medium Pull Provides effective soft-tissue rehabilitation of chronic neck pain and weakness. Provides a form of natural rehabilitation of spinal disc degeneration (neck arthritis). Comes with U.S. made solid rubber bands that have a One Year Warranty against breakage. Regular use improves head posture, neck strength and flexibility. There has never been a traction/exercise program like this! Comes with written and DVD instructions.