Patented D-shaped center gently supports the head while lobe supports the neck, helping restore the natural curvature of the neck & upper spine. Helps relieve tension headaches, neck spasms, arthritis & snoring. Exceptional support for side & back sleepers. Shaped center gently cradles the head while sleeping on your back. Cover is 50% polyester & 50% cotton, filling is 100% virgin polyester. Fits standard pillow cases. Type: Orthopedic; Color(s): White; Width: 23"; Depth: 5".