Therapeutic Putty is a great way to improve strength and function in hands and fingers. With different colour-coded consistencies, you can even blend colours together to create a full spectrum of resistance.Squeeze the putty to strengthen weaker grasps and develop a stronger than normal grasp. Suitable for adults and children. Available in two different sizes.Blue -Firm ResistanceGreen -Medium ResistanceRed -Medium Soft ResistanceTan -Extra Soft ResistanceYellow -Soft Resistance