This multipurpose putty is more than just fun; it strengthens kids' fine motor muscles, encourages the pincer grasp and provides tactile stimulation. Kids can squeeze and twist it as a way to reduce stress or minimize fidgeting. Each color represents a different firmness level: the higher the resistance, the more strengthening/stimulating the activity will be. 3 1/4" x 4" x 4" 1 lb total weight Ages 2-10 84% silicone oil, 15% silicone dioxide, 1% color pigment Imported