Volcanic Lava Foot Stone will never lose its effectiveness or shape. Naturally made Volcanic Foot Stone safely assists in the exfoliation of dry dead skin from the body hands and especially the feet. This simple yet amazing little stone that fits nicely in your hand is lightweight with a surface made of tiny little holes. Safest and most natural way to exfoliate and smooth the skin of body hands and feet. A Therapeutic mixture of basaltic minerals silicon magnesium iron and oxygen which creates the holes in the stone easily remove dry dead skin from body hands and feet. They are essential to your shower routine.