The designer, Bill Raftery, has been creating ergonomic office seating for the past 30+ years for major manufacturers such as Steelcase, Herman Miller, and Paoli Furniture   http://www.rafterydesign.com.

Raftery says: “This simple support ledge was designed as a result of the pain and numbness I was beginning to feel in my wrist and hand due to the many hours that I was spending while seated at my computer with my wrist resting against the edge of my desk. The development of the Edgewing seemed like a perfectly natural extension of the work I have been doing over the years to design and create ergonomically correct and comfortable office seating.”