The Junior mouse is just right for little hands to grasp, at about half the size of a standard mouse, the Junior mouse allows kids to learn all the functions of a grown-up model in a child friendly manner. The colored buttons are there to help children still trying to sort out their left from their right, the wheel button is also colored so that it easily stand out. The Junior mouse includes a special anti-bacterial coating called NANOARMOR which kills a widespread spectrum of bacteria, virus, fungi and algae, great for schools to help prevent the passing of germs. The Junior mouse, every child starting out on the computer should have one!