3M Ergonomic Optical USB Mouse for Small to Medium Hands - Comfortable & Precise for Office Work, Gaming, and Long Computer Use

This is the third ergonomic branded mouse I've purchased for several of our tech support engineers with carpal tunnel issues, and they love it! Thanks for making a product that helps.I don't personally use it so I can't speak to the Pros and Cons. All I know is they keep requesting it based on word of mouth.