Improves posture and body awareness. With unique and uneven honeycomb-textured surface. Small and handy. For balance and gait training as well as self-massage. Excellent for smaller feet and for foot reflexology massage. Can be used for treating any body part and when riding. Loosens connective tissue and relieves sore muscles. Pressure can be adjusted via needle valve. Made of PVC. Diameter: approx. 7 cm. Max. load: 100 kg. 160 g (80 g each).