Tynor Exercising Ball Ortho is an excellent physiotherapy device to provide a pleasurable exercise plan for the hand, wrist, forearm and the fingers. Made from safe and inert Polyurethane material, has excellent resilience for a long time. Compatible for hydrotherapy. Designed for pleasurable exercising regimen, thus has high patient compliance. Compact size for easy holding during, forearm, wrist, hand and finger exercises. Excellent resilience for a long time.