The revolutionary HEATABLE self-healing tool that launched our company. Dr. Oz called it an "Alternative Health Must Have for Back & Neck Pain". Incredible for spinal and muscle release almost anywhere in your body. Soothes and releases tight areas within 3 minutes from body weight alone - no effort required. Just find the spot and let your body 'melt' into the Acuball's patented technologically advanced design. Try it once - use it forever! Use the small nibs on the bottom of the Acuball to release tension lines in your face and massage your scalp. Works great in combination with any of our other products. A must have! Water filled latex free hypo-allergenic. Features Relaxes tight muscles. Enhances joint movement. Eeduces nervous system irritation. Stimulates blood flow to flush out built up muscle wastes. Releases natural painkillers and sedatives. Improves nervous system energetic flow. Dimension - 4 x 4 x 4 in. Item weight - 1 lbs.