Discover a mouse that helps reduce muscle strain while keeping your arms & shoulders in a more relaxed position. This mouse is clinically proven to alleviate pain & discomfort of repetitive stress injuries in the h&, wrist, or arm associated with the use of traditional mice-which can pronate the forearm & wrist & typically presses the wrist & carpal tunnel area against the desk. The 3M Ergonomic Mouse has a patented, vertical grip design that keeps your hand & wrist at a neutral angle, while the mouse works as a regular optical mouse. Grip the handle & rest your hand on the base. Use your thumb to left & right click. Optical sensor, wireless, USB (Universal Serial Bus) compatible plug & play. Soft-touch painted surfaces for added comfort. For right-handed use.