SPACE Seating Big and Tall AirGrid Back and Padded Mesh Seat, Adjustable Arms, Gunmetal Finish Base Ergonomic Managers Chair, Black Double airgrid Back and custom fabric Seat with adjustable lumbar support One touch pneumatic Seat Height adjustment 2-Way adjustable arms with PU pads Gunmetal Finish Base with Dual Wheel Carpet Casters Built to accommodate the larger user; supports up to 400 lbs. Breathable double Air Grid back with adjustable lumbar support. Thick padded mesh seat. Height- and width-adjustable arms for a custom fit. Heavy-duty five-star base has dual-casters for mobility.