Bests & Worsts Reviews from Amazon

I bought this product based on comments BUT there is one point I don't like and this is the most important reason I look for buying this kind of mouse, vertical mouse. THE BAD: * It DOES NOT provide support for wrist's pisiform bone. This part of the hand (pisiform bone area) lays on the desk and your hand will be rubbing on the desk, in my case, it is very uncomfortable (see picture). I had another brand and model that provided such support. * PgUp and PgDw keys should be located one above and one below thumb for more natural usage. On the other brand vertical mouse, PgUp and PgDw keys were located one above and one below thumb for better use on natural thumb movement. Base on this, I do not recommend to buy this product unless they change design