Our ergonomic vinyl Upholstered chairs adjust to fit most body types and workstations. Optional 6-way adjustable arm rests support a variety of arm placements for proper ergonomics. Additional ergonomic benefits include a contoured waterfall Seat cushion and an adjustable back rest with lumbar support for increased comfort during extended sitting durations. Vinyl chairs are constructed of highly durable molded polyurethane foam cushioning covered with easily cleaned antibacterial/antimicrobial vinyl available in over 65 standard and custom colors. Optional Seat tilt provides 8° forward and 3° backward locking tilt for ergonomic posture support. These medium Bench height chairs feature a black powder-coated steel base with fixed foot ring. Optional casters available and add 2-inches of height to the chair. Each ergonomic chair is backed by our 15-year warranty, lifetime on the Pneumatic lift.