This is our selection of the Thera-BandŽ Hand Exercisers. These specially-formulated exercisers are provided in a progressive sequence with each translucent color corresponding to a specific compression resistance. They are used for hand, finger, and forearm strengthening as well as hot and cold therapy! The softer yellow and red models fill the gap between putty and spring devices while being much less messy than putty. Progressive resistance in the different levels of compression allow each exercise to be geared to the client. Can be warmed in a microwave or chilled in a freezer for hot or cold therapeutic use.