Relief Wrap™ | Heat Therapy for Your Shoulders, Neck & Back!, The neck, shoulder and back heat wrap that soothes away tension and helps ease achy muscles and joints. The Thermapulse™ Relief Wrap unique design is shaped to perfectly target the neck, back and shoulder areas. The contoured fit gets to those hard-to-reach areas! The large wrap, with lightly weighted edges and a magnetic clasp, ensures full coverage and a snug custom fit that stays in place.