Chirp Wheel XR 4" Neck & HeadacheWhen you see the 4 XR Wheel you may ask yourself How could simply laying on this strange little wheel possibly relieve my tension? But once you try this wheel for yourself, you wont care how it works, youll just be glad it does. Simply place the shaped nodes at the base of your skull, lay back, and feel the tension melt away Resting applied pressure melts away tension Shaped nodes provide suboccipital release Spinal Canal protects the spine from