I'm a webmaster/site designer and most of my 60+ hour work week is spent on a computer. I've never liked mice and have been a trackball user for years.

Although I believe any trackball poses less threat of injury, I began having problems with expensive trackballs I *thought* were ergonomically designed. The last of these, a Logitech TrackMan Marble FX, created worsening severe thumb and wrist pain. By the time I was unable to open jars in the kitchen or even pick up my stainless steel coffee mug by its handle, I knew I had to make a major change.

I've only had my Evolution Mouse-Trak for several days, but the pain is already subsiding. What you say about your design appears to be true! Thanks for a great product!

David Kidder
Take 3 Inc
Scottsdale, AZ