Managerial mid-back chair, a part of the HON Sensible Seating Series, offers a passive ergonomic design, Seat and back flex independently of each other to allow the back to recline 2 degrees for every 1 degree of seat recline, Seat has an independent action from 4 degrees to negative 1 degree, Deeply contoured foam cushion on seat is 2-3/4"" thick, Seat dimensions are 20-1/4"" wide x 18-1/2"", Back has a 1-1/2"" thick urethane foam cushion and measures 19"" wide x 17-1/2"" high, Functions include pneumatic seat-height adjustment from 16-1/2"" to 21"", 360-degree swivel, dual-action synchro-tilt, tilt tension and tilt lock, Five-star base has 2"" hooded dual-wheel casters, Chair is certified by SCS to be in compliance with specific indoor air quality emission requirements, Meets or exceeds applicable ANSI/BIFMA standards, Arms are sold separately, SKU: SPRCH29123