Hot Stones that are made from Basalt Rocks , naturally polished from water irrigation gently washing down on the stones for many years, providing a very smooth and silky surface. The Hot Stones are gently heated to the correct temperature as not to burn , but to provide the right amount of heat to promote relaxation, While holding two stones , one in each hand , becomes an extension of hand to gently but firmly reduce tension , and to provide total relaxation ,