This ergonomically sculpted mouse is designed to support your hand comfortably without the need to clutch the mouse to control it. The specially designed arch fills the hollow of your palm and allows you to rest your hand on top of the mouse. This arch promotes straight alignment of your hand and wrist bones and slightly elevates your wrist off of the working surface. This helps to break the harmful habit of resting your wrist on the desk or mouse pad and pivoting the mouse from side to side. The Contour Mouse allows you to rest your hand on top of the mouse and activate the buttons with small, subtle motions without flexing your fingers. The elimination of flexing reduces carpal tunnel use and the threat of repetitive strain injuries.