ALPHA HOME Office Chair, Ergonomic Height Adjustable Swivel Chair, Computer Office Chair with Adjustable Lumbar Support, Armrest, Tilt Function, Up to 160 kg Load CapacityErgonomic office chair: The modern office chair is equipped with an adjustable, human curved lumbar support and a 90 folding armrest to relieve pressure and pain in the body. 8cm thick highly elastic foam cushions provide a comfortable sitting experience for long hours of study or work COMFORTABLE & BREATHABLE MESH SEAT: Office chair with breathable net for optimum temperature, padding with high density permeable sponge for relief of hip and back