Description: Get relief where you need it most with soothing HeatWraps specially designed to fit your lower back and hip. Wraps deliver heat that penetrates deep, warming the muscle right where it hurts--to relax, soothe and unlock tight muscles for long-lasting pain relief. Wraps relieve without restricting movement, allowing you to move freely while delivering therapeutic heat to relax tight back and hip muscles. Thin and discreet enough to be worn under clothing, while doing chores, on the move or simply relaxing. HeatWraps keep on working even after you take them off for up to 16 hours of back pain relief. Thats 8 hours of heat while you wear it, plus 8 hours of relief after you take if off.