Ergonomic Task Chair in Black FreeFlex Fabric or Custom Fabric Choice. ProGrid Back and Fabric Seat. Armless Chair with Pneumatic Seat Height Adjustment. Back Height Adjustment. 360 Degree Swivel. Multi-Task Control. Features: Breathable ProGrid Back with Built-in Lumbar Support Custom Fabric Padded Seat Pneumatic Seat Height Adjustment and Back Height Adjustment Specifications: Overall Product Dimensions: 39.75" H x 25" W x 25" DOffice Star