Vertical mouse: prevents RSIThe left-handed HE Mouse wireless has a vertical grip which provides a neutral, relaxed position of the hand and wrist. You move from the forearm instead of your wrist, which prevents RSI. The mouse fits comfortably in your hand, and supports your wrist and fingers.Unique features: Customizable buttonsYou can customize the buttons on the HE Mouse to your personal requirements. Award Winning DesignHE Mouse has won the Benelux Office Product Award 2013 due to its innovative design.