These massage rollers are made from 100% natural cork. The fitness roll can help you to improve flexibility of muscles while helping to improve circulation. An excellent self-massage tool for deactivating trigger points and for functional exercise Lean into the floor to create just the right pressure to roll out your back or big muscle groups like hips and legs. MATERIALCork DIMENSIONS45x15 cm MADE INPortugal CARE INSTRUCTIONSWipe clean with a damp cloth.