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 chrome 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. Optional 20-inch diameter chrome foot Rings are available. These medium Bench height chairs feature your choice of chrome-hooded casters or black glides on a polished cast aluminum base. Each ergonomic chair is backed by our 15-year warranty, lifetime on the Pneumatic lift.