Mobile guest chairs with arms stack up to five high for use in meeting rooms, conference areas, cafeterias & reception areas. Molded seat underpans protect seat fabric when stacked & give a finished appearance. 20-1/4" wide x 19-3/4" deep seat is made of compound-curved blow-molded plastic & a 3" thick urethane foam cushion. Polymer arm caps have gently sloping, wide top surfaces for maximum comfort. Inverted U construction features 1" 14-gauge steel tubing that runs through polymer arm caps for exceptional rigidity. Usable depth between arms is 16-3/4". Mobile guest chairs have fully upholstered fan backs with a 1-1/2" thick urethane foam cushion. Upholstery is made with 50 percent polyester & 50 percent acrylic fabric with fabric protector. Guest chairs roll on 2" hooded dual-wheel casters & are available in black frame only.