Three different support levels for the head and neck * Used within a standard pillowcase * Reduces headaches stiff neck and back pain * Relieves stress and strain - ligaments muscle and discs * Specifically designed for those who sleep on their side or back * Reduces strain on the neck associated from hyper-extension while sleeping * Filled with hypo-allergenic polyester fiber and covered with a white on white print poly/cotton cover * Size: 23 x 18 *