Experience the unrivalled ergonomic comfort of Contour Design's RollerMouse Red Plus and Black Balance Keyboard. The Black Balance Keyboard provides all the benefits of a full sized keyboard in a compact keyboard form, including a 10 digit number pad. This unique computer keyboard also includes tilt options, including negative, neutral, and positive tilt to adapt to any workstation. When used with the negative tilt, together with RollerMouse Red Plus, the keyboard promotes comfortable, natural hand and elbow position, helping to reduce strain and keep your workstation in perfect harmony. The RollerMouse Red Plus features our patented Rollerbar to control the cursor and allow you to work fluidly with both fingers and thumbs, revolutionizing ergonomic computer use. It also features an extended palm rest that fits perfectly to larger workstations or large hands. Working together, these two innovative computer accessories support natural posture and help minimize repetitive strain.