Comes in 6 stiffness levels: extremely easy/ beige, very easy / yellow, easy / red, medium/ green, difficult / blue and very difficult / black and 4 package sizes: 56 g 85 g, 113 g and 450 g. Non-toxic, non-greasy, and antimicrobial, hygienic even after multiple use. For independent use at home, in the office, or while traveling. Can be used in physiotherapy and ergotherapy, for example, for the rehabilitation of finger and hand injuries, and to maintain mobility in the finger joints. Therapy putty helping to mobilize and strengthen fingers and hands.