HEATING PADS * Standard 14 x 27 * The positioning strap with Velcro-type closure ensures a secure proper fit for maximum treatment * The easy to use hand control features four heat settings and four time settings * Ideal in the treatment of arthritis back pain sprains and strains muscle soreness neck pain headaches and sport injuries * Moist heat therapy is more effective than dry heat because moisture transmits heat more efficiently than air * The Therma Moist Heating Pad has an outer flannel cover that draws the air