Review on Memzuoix Ergonomic Mouse Wireless Mouse, 2.4G Large Vertical Mouse USB Optical Cordless Mice With 800 / 1200 /1600 DPI, Ergonomic Computer Mouse For Laptop, PC, Desktop (For Right Hand) Red by Jennings Ford

I'm really happy with this mouse. Through the course of the work day I would start to get a sore wrist. With this mouse I don't have that issue. It's much more comfortable to use than a traditional mouse.It works just like a regular mouse, so there's no learning curve. Maybe it feels weird for the first day or two, but you get used to it pretty quickly.The scroll wheel works well - the little grooves in it give your finger good traction. The "clicks" feel solid. The rubber grip on the thumb area didn't mean anything to me when I ordered it, but in using it I can understand how it helps to keep your thumb from sliding down, and it also makes it a bit more comfortable.Overall I'm very pleased with this mouse. I may get another one for my personal computer because a regular mouse feels small and uncomfortable after getting used to this one.