TheraPutty® hand exercise material is used by therapists to develop and maintain grip strength since the 1980s. Many of you who have received therapy after a hand injury have probably used TheraPutty® material. The patented Puttycise® tools are a new addition to the occupational therapy universe. These tools can be pushed, pulled or turned through putty to produce specified exercises to simulate functional activities. Theraputty® hand exercise material is the standard in resistive hand exercise material. Each color-coded putty has a different consistency ranging from xx-soft for strengthening the weakest grasp to extra-firm for developing a stronger grip.