OT2909 Features: * Breathable screen back and mesh seat with built-in lumbar support * One touch pneumatic seat height adjustment * Locking tilt control with adjustable tilt tension * Padded armrests * Heavy duty nylon base with dual wheel carpet casters * 5-Star base with dual carpet wheel casters Specifications: * 360 Swivel Dimensions: * Seat dimensions: 4"" H x 19"" W x 20"" D * Back dimensions: 19.75"" H x 22"" D Collection: * Work smart Collection Warranty: * 5 Year limited manufacturer"s warranty