Cura heat back shoulder pain provides targeted temporary 12 hour warming relief from minor muscular and joint aches and pains the unique neck contouring u shape provides warming relief to both the back and sides of the next and shoulders just open the sachet and apply to clothingunderwear around the base of the neck and the heat will radiate through to the source of pain increasing circulation decreasing stiffness and relaxing sore muscles fragrance free non medicinal and with a thi