KEERQI Desk Attachable Home&Office Computer Arm Support Black Color Mouse Pad Arm Wrist by PDXSun Made of strong ABS plastic. Package including: One Piece A Computer Arm Support,Can be attached to desks (Ergonomic, Adjustable) Reduces pressure on wrist,Minimizes strain to the muscles and tendons on the neck, arm, and shoulder and also decreases static strain and fatigue Adaptable for right or left hand users, 180 Degree Rotated No assembly required, easily attaches to a computer desk up to 4.5 cm (1.7in) thick