Adjustable chair height easily climbs from a low of 43.9 inches to a high of 47.8 inches Ergonomically contoured backrest is height adjustable and includes cushioned lumbar support Adjustable seat depth allows the cushion to slide forward or backward to comfort the thighs 4 way adjustable armrests: height, width, depth and angle adapt to your needs 2 way seat and backrest lock: seat and back adjust independently and can lock at a custom angle