Guest chair with fixed arms features the indoor advantage gold certification for being environmentally friendly and is endorsed by The World Chiropractic Alliance. 100 percent polyester material with Nano-Tex stain-resistant fabric allows airflow and breathability. Chairs stack up to four high. You can also suspend it from your worksurface for easy housekeeping. Seat measures 17-3/8" wide x 20-3/8" deep x 18" high. Usable seat depth is 17". Back measures 17-3/8" wide x 11-1/2" high. Chair meets or exceeds applicable ANSI/BIFMA standards.