OT2910 Features: * Thick padded fabric seat and air grid back with built-in adjustable lumbar support * One touch pneumatic seat height adjustment * Deluxe 2-to-1 syncro tilt control with adjustable tilt tension control * Height adjustable arms with soft PU arms * Heavy duty gunmetal coated base with black end caps dual wheel carpet casters Dimensions: * Seat dimensions: 3"" H x 20"" W x 19.5"" D * Back dimensions: 25.75"" H x 22.5"" W