The Cherapy Therapeutic Heat Pillows can be used to relieve aches and pain caused my many, everyday problems including muscle pain and stiffness, lower back pain, headache, neck and shoulder pain, arthritis, muscle cramps, congestion, stomach ache, sore knees, ankles, feet and much more. The pillows are composed of natural cherry pits that have been sewn in the fabric and contain no medicine, sweeteners or chemicals.