Features:1. Release tension and pain of your body by massaging and opening up pain knots on the sole of your feet, which are connected to your whole body. You will feel how the pain releases and your body feels more young and energetic again.2. You can target exactly and efficiently the pain points which are most important for you by increasing the pressure on them.3. Promote health, good for your Lungs, Solar plexus, Stomach,Liver, Kidneys,Brain, Back, etc.4. Restore the balance of your body naturally. You will notice yourself sleeping better and find your sense of wellbeing improving. 5. Doesn&39;t affect the organs directly but increasing the energy to the areas of the organs to help them function better.Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement.2. There are no rules for the plastic massage stones on this productSpecification:Material: plasticSize: 35x70cmColor: blackApplicable people: children, adult, elderlyThere are no rules for the plastic massage stones on this product