Dual Function Ergonomic Chair with Seat Slider, Ratchet Back and Adjustable Soft PU Padded Arms. Contoured Molded Seat and Back with Built in Lumbar Support. One Touch Pneumatic Seat Height Adjustment. Dual Function Control with Seat Slider. Ratchet Back Height Adjustment. Height Adjustable Arms with PU Pads. Heavy Duty Nylon Base with Dual Wheel Carpet Casters. Features: Contoured Molded Seat and Back with Built in Lumbar Support One Touch Pneumatic Seat Height Adjustment Dual Function Control with Seat Slider Ratchet Back Height Adjustment Height Adjustable Arms with PU Pads Heavy Duty Nylon Base with Dual Wheel Carpet Casters Specifications: Overall Product Dimensions: 38.25" H x 26.5" W x 25.5" DOffice Star