Popular with sports enthusiasts, the 6 cm diameter Gorilla Sports massage ball helps relax hard-to-reach muscles such as the back, neck and shoulders. Used against a wall to massage the back, or on the floor to massage the arch of the foot, the massage ball helps treat sensitive areas. Soothe away muscle tension after a run or workout with a self-massage. Whether in the office or at home, you can take it anywhere, thanks to its small size. Key features: Relaxes and massages muscles. Can be used in sitting, lying or standing position. Rapid muscle recovery with stimulation of precise points. Strengthens deep muscles, increases well-being. Diameter: 6 cm. Color: black. Material : 100% silicone. Weight : 140 g.