These Spa Hot Rocks bring a whole new meaning to the word massage! Simply heat them in water & use the stones with essential oils to provide a deep, relaxing massage. Stone therapy dates back 5, 000 years to India. There are three main uses: Heat the rocks to help penetrate your muscles & ease tension. Cool the stones to help soothe inflammation. When hot & cold are alternated, the circulation is stimulated, thereby assisting the body in self-healing. This is a very standard procedure in helping injured muscles & joints. Stone Therapy will leave you feeling relaxed, refreshed & cleansed. Warm oils can be applied to the treatment area, smoothly moving the stones around the area pressing lightly & massaging slowly. There are around 9 stones in total & are presented in a luxury red or black drawstring bag, & come complete with a full instruction booklet. By using the hot rocks you will notice a healing improvement of the following symptoms: Muscular aches, pains & strains; Circulation Improvement; Rheumatic & arthritic relief; Back Pain; Stress, anxiety & tension; Insomnia & Depression.