Medium Strength therapy putty which offer a complete range of resistaBuild up the muscle strength or grip in your hand or wrist following injury. It was so much fun we couldn't put it down. Clean, non-toxic, non-oily and bleedproof therapy putty leaves no colour or residue on the client's hands. It will not fragment, separate or stick to the skin. Designed to meet a wide range of strengthening needs, putty can be squeezed, stretched, twisted or pinched.