Logitech - MX Vertical Ergonomic Wireless Mouse - Serious Techies

Ergonomics meets performance in MX Vertical, an advanced ergonomic mouse designed to reduce muscle strain and improve posture.
MX Vertical’s natural handshake position reduces muscular activity by 10 percent compared to a standard mouse – without any loss in overall performance. 57° VERTICAL ANGLE FOR IMPROVED WRIST POSTURE