The Hot Cold Therapy Massager is a vibratory massager with a 9ft cord. Vibratory massage can help stimulate nerves relieve muscular tension and decrease stress. Massage has been shown to increase local blood flow and block neuro transmitters and may help decrease inflammation and increase oxytocin levels; all of which allow muscles to relax reducing feelings of tiredness and pain. Therapeutic massage helps relax and relieve muscle tightness all over your body. Enjoy fast comfort by increasing blood circulation to speed muscle healing and fitness recovery. This massage kit includes 7 customizable massage attachment heads to ensure relief. The Heat attachment helps to increase circulation for muscle comfort and relaxation make sure to press the heat button to activate while using this head. The Cold attachment helps to reduce joint pain swelling and muscle inflammation. The innovative Four Finger Flex attachment has four finger like nodes to replicate a masseuse s hands. The Triad attachment head has three pinpoint areas to massage deep into the tissue to break up knots.