MX Vertical is an advanced ergonomic mouse that combines science-driven design with the elevated performance of Logitech's MX series. Rise above discomfort with a mouse designed to reduce muscle strain, decrease wrist pressure, and improve posture. MX Vertical's natural handshake position reduces muscular strain by 10 percent and promotes a more ergonomic posture. MX Vertical's unique 57 degrees vertical angle reduces the pressure on your wrist, while your thumb is positioned comfortably on the thumb rest. MX Vertical is great for large to medium hands, specially designed and sculpted by Logitech's team of ergonomic and design experts. MX Vertical has been designed and tested with criteria set out by leading ergonomists - improving posture, lowering muscle strain, and reducing wrist pressure. Advanced optical tracking with a dedicated cursor speed switch results in 4x less hand movement - reducing muscle and hand fatigue. Cursor speed and accuracy can be customized in Logi Options+. MX