Pure Relief XXL offers double-wide therapeutic heat coverage for sore muscles in your back, legs, and shoulders. With nearly twice the surface area of standard heating pads, it is ideal for wrapping around large areas to temporarily relieve aches and stiff joints. Use for just 20 minutes daily (or as recommended by your doctor) to temporarily increase local blood flow and circulation.Directions: Use for just 20 minutes or as directed by a doctorDimensions: 50.8cm x 61cm