The most unique vertical mouse in our assortment is the Oyster Mouse. This mouse does not have one standard vertical inclination angle: you can adjust it yourself. You determine how you want the vertical inclination, with 5 positions to choose from. The mouse ensures a comfortable, relaxed and neutral wrist and hand position. With a vertical mouse your... wrists bend in a natural way, minimising physical complaints. This mouse is suitable for both left-handed and right-handed users, and it is easy to switch.