Reapply pack for 20 minutes, if needed. TheraPearl Back Wrap It’s perfect for abdominal cramps and muscle tenderness on large areas of the body. The pack retains its therapeutic temperature for a full 20 minutes, so you can numb the pain with analgesic cold, or let the soothing heat release your knotted muscles.
Reapply pack for 20 minutes, if needed. You just finished your morning run and your shins are burning. Great after a run and anytime shin tenderness sends you to the bench.The pack holds its therapeutic temperature for a full 20 minutes so you get fast, effective relief.