With husband's back complaints while he was out of town I snuck this under the sheets on his side of the bed. Until he returned I noticed I would fall asleep with my arthritic hands and a foot dangled over it! Made me feel better, even it in my head! LIked it so much I bought the smaller health pad, put a cotton quilted pillowcase over it and use in my wingback recliner. Sometimes on my back, sometimes I just sit on it!