The 3M Ergonomic Wireless Mouse MMMEM550GPL features a vertical grip that helps maintain a neutral angle for your hand and wrist. It is clinically proven to alleviate pain and discomfort associated with repetitive stress injuries. This mouse allows you to use your thumb for left and right clicks on the top, while a third button on the side enables scrolling. It is USB compatible for easy plug-and-play functionality and is designed for right-hand use, available in a large size.