Myhome 450MM Office Computer Adjustable ArmRest Executive Chair-Desk Support Red/Black/Yellow (Black) Compact, intuitive, comfortable Computer Arm Rest Support (450mm) Office Computer Arm Rest minimizes strain to the wrist, arms and shoulders. Can be easily rotated 90 degrees out of way. Beveled front smoothes transition to mouse pad. Computer Arm Rest is easy to assemble, no need any other tools.