Executive high-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, Back has a 1-1/2"" thick urethane foam cushion, 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, Seat measures 20-1/4"" wide x 18-1/2"" deep, Usable seat depth is 18-1/2"", Back dimensions are 19"" wide x 22"" high, 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: SPRCH29249