High Back Task Chair This Blue multifunction Task Chair is solidy made for long lasting durability. Seat is scultured of molded foam that contours to the shape of the body. Ratchet back height adjustment allows positioning for proper lumbar support. Height and width adjustable armrests are padded with soft polyurethane for added comfort. 18-22" pneumatic seat height adjustment with tilt-lock. 27" diameter nylon 5-blade base includes hooded swivel casters for mobility. Measures 20"W x 19"D.