Soothe your lower back and hip area with ThermaCare Lower Back and Hip Heat Wraps. Targeted Heat Therapy - Specially-designed to fit your lower back and hip area - Now comes in Small-Medium size as well as Large-Extra Large - Provides temporary relief from minor muscular aches and joint pains associated with overexertion strains and sprains as well as minor pains associated with arthritis - Allows you to move freely while delivering therapeutic heat to relax tight back and hip muscles - Thin enough to wear discreetly under clothing - Can be worn on the move during chores when relaxing or overnight*.