Symple Stuff Our ergonomic fabric 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. Fabric chrome chairs are constructed of highly durable moulded polyurethane foam cushioning covered with heavy duty olefin fabric available in five standard colours. Optional seat tilt provides 8掳 forward and 3掳 backward locking tilt for ergonomic posture support. These desk height chairs feature your choice of chrome-hooded casters or black glides on a polished cast aluminum base.