CanDo TheraPutty hand putty is the leader in resistive hand exercise material. Available in six color-coded resistance levels, CanDo TheraPutty has different firmnesses ranging from xx-soft for strengthening the weakest grasp to extra-firm for developing a stronger grip.Squeeze, pinch, stretch or twist CanDo TheraPutty using a variety of different finger, hand and wrist resistive exercises to strengthen hand muscles, improve fine motor skills, and decrease stress. Just a few groups this product is ideal for include: physical and occupational therapists, golfers, tennis players, musicians, weight lifters, children, and the elderly. Available in convenient easy-to-open plastic containers (2, 3, 4 and 6 ounce) for individual patients to use at home and a choice of larger containers (1, 5 and 50 pound) for the hospital or clinic. CanDo TheraPutty material is gluten, latex and casein free. The six piece set includes all six colors / resistance levels for all your hand therapy needs.