Color-coded putty provides a quantitative tool for evaluating and charting progress. This coding system makes it easier for therapists to make informed exercise recommendations and also motivates the client to advance to the next resistance. Use Elastic-Putty(r) for exercising shoulder muscles as well as finger extension and abduction, and thumb flexion, abduction, or extension. Exercise becomes more efficient since reshaping is reduced. Resilient, elastic quality resists breaking. Elastic-Putty(r) is packaged by volume in cubic centimeters. Available in three varieties: Low Resistance Orange, Medium Resistance Red and High Resistance Pink. U.S. Patent 5,319,021