The Evoluent™ VerticalMouse™ has a patented new shape that supports your hand in a relaxed handshake position, and eliminates the arm twisting required by ordinary mice. It is a major advance in mouse evolution! This is the right hand, wired version.
This size is suitable for hands measuring at least 178 mm from the tip of the middle finger to the wrist crease. Hands shorter than 178 mm may be more suitable for the VerticalMouse 4 Small.