Flexi-Grip Putty features 6 color-coded resistances in TAN, YELLOW, RED, CORAL, GREEN & BLUE. Begin your progressive resistance exercise program with the TAN or YELLOW and gradually increase the resistance as your hand gains strength. Exercising with Flexi-Grip Putty promotes increased blood flow, ROM (range of motion), grip strength, wrist strength and dexterity. Elgin Flexi-Grip Exercise Putty is not greasy like many brands - A superior choice for physical therapy and occupational therapy applications. Elgin Putty is Made in the U.S.A.!