EXECUTIVE MID BACK - BLACK Features deeply tufted seats for superior comfort. Seat and back are covered in luxurious, contoured acrylic fabric. 4" extra thick seat and back. Ergonomically designed for lumbar support. Helps relieve fatigue from day long sitting. Arms covered in textured urethane over steel. Molded base provides sturdy support. Dual wheel casters for mobility. Pneumatic height adjustment from 15 " to 19". Easy assembly. 2 year limited warranty.