DESC: Introducing the New Perfit Mouse Optical (PMO) and Perfit Mouse Classic Plus (PMO5). Evolving from the original patented shape, the new versions maintain the ergonomic integrity of the time-tested form while adding new productivity enhancing features. The original Perfit Mouse, introduced in 1995, has provided over 100,000 users with unparalleled comfort and performance. Years later, the Perfit Mouse continues to be highly recommended by safety specialists, health professionals and ergonomists. In many instances, the Perfit Mouse is the only solution for eliminating or reducing hand and wrist discomfort while maintaining a high level of productivity. Proactive companies use the Perfit Mouse on mouse intensive workstations because it is highly effective in preventing mouse related injuries.