Evoluent VM4L VerticalMouse 4 Left Hand Ergonomic Mouse with Wired USB Connection (Regular Size)

Avoids forearm twisting for comfort and good health. The patented shape supports your hand in an upright neutral posture that generally avoids forearm twisting. Many users, including medical doctors, ergonomists and physical therapists, said the Evoluent VerticalMouse provides superior comfort and even relieved their wrist pain.
IMPROVED THUMB REST: The thumb rest has been reshaped to provide even more comfort over earlier versions
AVOIDS FOREARM TWISTING FOR COMFORT AND GOOD HEALTH: The patented shape supports your hand in an upright neutral posture avoids forearm twisting.
POWERFUL AND INTUITIVE DRIVER: Evoluent Mouse Manager provides extensive but easy to use functionality for 6 buttons through a simple and intuitive interface.
HARDWARE COMPATIBILITY: VerticalMouse is plug-n-play compatible with all operating systems that support USB. Basic button and wheel functions work without additional drivers. SOFTWARE COMPATIBILITY: VerticalMouse comes with Mouse Manager software for customizing the buttons. Mouse Manager is compatible with: Windows 7 and 10 Mac OS 10.5 to 10.14 (update for 10.15 is under development. Third party software may be used in place of Mouse Manager for OS 10.15.)