Ergonomic ESD Chair, Weight Capacity 300 lb, Material Vinyl (Antibacterial), Seat Height Range 17 in to 22 in, Color Black, Seat Width 20 in, Seat Depth 18 in, Base Five-Star Polished Aluminum, Number of Casters 0, Number of Glides 5, Partially Assembled, Standards Antibacterial standard AATCC TM147; Antifungal standard ASTM G21