When purchasing seating for businesses that are open around the clock accommodating all body types is a big concern. This big & tall 24/7 multi-shift office chair will provide much needed support for your employees, day or night. Comfortable: High-Back design, ventilated mesh back, reinforced back with metal frame, fabric upholstered seat, 5" thick molded high density contoured seat, CAL 117 fire retardant foam, rated for 400 lb. weight capacity, 24" extra wide seat Accommodating: Pneumatic seat height adjustment, dual paddle control, adjustable height lumbar, 2-to-1 Synchro Tilt-tilts the back and seat in unison, tilt tension adjustment knob adjusts backward tilt resistance, height and width adjustable padded arms Smooth Motion: 360 degree swivel seat, heavy duty powder coated metal base with dual wheel casters to reach multiple work surfaces PRODUCT MEASUREMENTS: Overall Size: 30"W x 27"D x 45.25-49"H; Seat Size: 24"W x 21.5"D x 20-23"H; Back Size: 24.5"W x 27"H; Arm Size: 25.5-32"H from floor; 5.5-8.25"H from seat