Premium Computer Chair Armrest Wrist Rest - Attachable Home&Office Computer Arm Support - Ergonomically Designed Mouse Pad Arm-stand Attaching to Armchair (for CHAIR USE ONLY)(Black) Compact, intuitive, comfortable Computer Arm Rest Support Reduces tension and fatique in the neck and shoulder muscles Ergonomic designed for office worker and so on Adaptable for right or left hand users, 180 Degree Rotated Computer Arm Rest is easy to assemble, no need any other tools