The advanced ergonomic MX Vertical mouse combines a scientifically based design with the impressive performance of the Logitech MX series. No more uncomfortable hand positions thanks to a mouse that reduces muscle strain, relieves pressure on the wrist and improves posture. ERGONOMICS AND PERFORMANCE IN ONE The advanced ergonomic MX Vertical mouse combines a scientifically based design with the impressive performance of the Logitech MX series. This mouse reduces muscle strain and pressure on the wrist and improves posture. So pain while working is a thing of the past.