RollerMouse Pro3 is the next step in the evolution of the computer mouse. Our original and longest running design, RollerMouse Pro3 is centrally located in front of the keyboard and is perfect for those who work from a keyboard tray or rely on the 10-digit number pad to get the job done. RollerMouse is designed to allow users to work in a comfortable neutral posture and greatly reduce reaching and gripping. RollerMouse can reduce the pain and strain caused by a traditional computer mouse in the hands, wrists, elbows, and shoulders. RollerMouse Pro3 is designed to fit small to medium sized hands.