This massaging memory foam back cushion provides massaging comfort and support. It's specifically designed to support the S curve of your spine and has a quiet, built-in massager that soothes aching, tired muscles. Constructed of form-fitting memory foam, with a high/low button to control vibration level. Great for home, work and travel. Operates on four AA Batteries (not included).This massaging pillow provides soothing comfort massaging action anywhere you are. Relax at home, in the office, at your computer, commuting to work, traveling - think road trips and flying. ....read more