Features : • 2 in 1 Pain Reliever • Size : Universal • Re-usable & can be used alternatively • Easy Manner of Using : Heat/ Microwave or Freeze • Works on the twin principle of Thermotherapy & Cyrotherapy • Used as Hot Pack; it increases the blood flow thereby reducing muscle spasm and offering relief from chronic Knee, Elbow & Shoulder pain • Used as Cold Pack; it reduces the blood flow thereby reducing swelling post injuries • Usage as Hot Pack : Knee pain, Muscle pain, Back pain, Menstrual cramps • Usage as Cold Pack : Reduce swelling, During toothache, Reduce fever, Relief from headache .