microware Wireless Mouse 2.4G Ergonomics Vertical Optical Mouse with Nano Receiver 4 Adjustable DPI 800/ 1200/ 1600/2400 Rechargeable 6 Buttons for Computer Notebook PC Laptop Mac-b00k (White) Wireless Optical Gaming Mouse with Bluetooth  (2.4GHz Wireless, Black)

Vertical Ergonomic Design Tired of using the traditional grip? Take a break from overly-clunky or uncomfortably tiny mice. The ergonomically-designed thumb rests and grips fit the contour of your palm for maximum comfort. OPTICAL VERTICAL MOUSE - HEALTHY MOUSE This mouse is full of vitality, innovation, and has many health benefits. By changing the way you use your wrist and arms, you will effectively reduce pain and discomfort. Add rubber oil coating to prevent sweaty fingers from sliding. From the office to gaming, using the optical vertical mouse is comfortable and healthy.