Massage ball made of plastic with a diameter of 6 cm. It is used to release excessively tense myofascial points. It needs to be attached to the wall or floor to stabilize its movement, and then press selected points on the body. They are proving effective.in. for pain in the spine, shoulders, neck, arms, and legs. Perfectly suited for massaging hard-to-reach areas. diameter: 6cm weight: 144g