Padded guest chair features curved loop arms and a contoured, floating back that provides lumbar support for optimum comfort. 20-1/4" wide x 19-3/4" deep seat has a 3" thick urethane foam cushion. Arms are made of 1" diameter steel and PVC skin over urethane arm rests. Reverse-tapered seat back is made of 1/2", five-ply curved plywood and a 1/2" thick urethane foam cushion. Back measures 21-1/4" wide x 16-1/4" high from seat. Black frame is made of 1" round, 12-gauge steel tubing. Chair is certified by SCS to be in compliance with specific indoor air-quality emission requirements and meets or exceeds ANSI/BIFMA performance standards.