The ergonomic HandShoe Mouse is based on peer reviewed research. Did you know that one in six workers are suffering from some form of RSI or Carpal Tunnel Syndrome, mostly related to intensive use of a traditional or vertical computer mouse? The HandShoe Mouse is developed by a Dutch medical university and has been tested in a number of large organisations for almost two years. During these tests we saw many people who were suffering from RSI or Carpal Tunnel Syndrome, returning to work. The reason is that the unique and patented shape of the HandShoe Mouse fully supports your hand in the ideal relaxed position and prevents gripping and pinching, which is what occurs when you use a standard or a vertical mouse.