Enhance your seating comfort with this breathable mesh backrest armrest attachment designed for office and home use. The ergonomic curvature provides essential spinal support while the durable nylon construction ensures long-lasting performance. Compatible with most standard office chairs, computer chairs, and swivel chairs, this attachment offers an easy upgrade solution for improved sitting comfort. Size Chart: 43cmx42cm/16.93inchx16.54inch Package Includes: 1 Chair Back Armrest Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.