Ergonomic ESD Chair Weight Capacity 300 lb Material Vinyl (Antibacterial) Seat Height Range 22 in to 29-1/2 in Color Black Seat Width 20 in Seat Depth 18 in Base Five-Star Polished Aluminum Number of Casters 0 Number of Glides 5 Foot Support 20 in Adjustable Flat Chrome Footring Partially Assembled Standards Antibacterial standard AATCC TM147 Antifungal standard ASTM G21