This is the device that provides continuous heating or cooling therapy to relieve migraines without medication. The device circulates heated or cooled water through the head pad (two included), providing constant migraine relief without requiring you to refreeze or reheat gel packs. The heat therapy relaxes tight muscles that painfully pinch nerves during a migraine and cool therapy contracts blood vessels that expand and cause painful pressure on nerves. Independent research published in the Archives of Family Medicine has shown that up to 87% of migraine patients experienced relief through heating and cooling therapy. The pads also inflate to provide soothing compression and have adjustable straps that ensure they remain in place. An LCD control panel on the pump adjusts the temperature from 38º F to 128º F. Includes one pad for the forehead and temples and another for the back of the head. Requires less than 2-oz. of distilled water. Plugs into AC. Pump: 11" L x 4 1/2" W x 4 1/2" H. (3 1/2 lbs.)