I have been using this 3M ergonomic mouse for past 3 weeks now and I am pretty impressed that the pain in my arm and wrist that has been there since 6 mos because of herniated disc in my neck has almost gone.

This mouse is amazing. I had one several years ago at my job. I went searching for it to use at home. It is terribly hard to find, which is sad because it is a GREAT mouse to use, especially if you already have some wrist pain or are trying to avoid ever getting it.

Keeps wrist upright; click with thumb

Need to replace batteries; no back button

Don't underestimate this funny looking mouse. It's just a regular mouse that you hold vertically and manipulate left and right buttons with your thumb on a rocker switch instead of fingers on buttons.

the mouse click is great as you don't have to move your fingers as it is done with the thumb, but the ease of moving the mouse on any surface is not as good as it could be. The scroll feature is placed great and works well. I would recommend this product even with it's small flaw.

I've had one of these before. I use a computer all day at work, and the regular mouse isn't nearly as comfortable as this. Unfortunately I couldn't persuade the health and safety bods that I really needed one, so I ended up paying for it myself. It's worth it

Excellent! Takes a little bit of time to get used to it, but its amazing!

Ive been using this mouse for years. I write a great deal in my work, so this has saved my wrist. My only complaint is that they only seem to last less than a year before I have to replace. That kind of planned obsolescence isnt cool.