SPECIAL ORDER: Goldtouch Semi-Vertical Mouse Wireless (Right-Handed) Medium with Dongle 

The Goldtouch Semi-Vertical Mouse was created with an optimal slope of 66 degrees for the user who wants a mouse that is midway between a traditional ergonomic mouse and vertical mouse. Unlike vertical mice, you'll have the power of gravity on your side when it comes to clicking, so you won't have to use as much movement between the thumb and fingers (which in turn can require more pinching of your muscles and nerves).