DescriptionMade from material, durable to use. It can provide greater support than other material balls, while rubbing out tension from the of the neck down to the sacrum, from the base of the spine to the toes.Features- Color: Blue. - Material: Rubber. - Size: About 6.5x6.5x6.5cm/2.55x2.55x2.55 inch. - and high quality. - It's a simple massage and therapy tool which can help stimulate the blood circulation, increases blood flow. - It is small enough to take with you anywhere. - Suitable for the office staffs, athletes, old man and women. - It can massage muscles, put on the palms and soles of the feet or body parts, pressuring and extruding to stimulate the skin.