Stay on task with the Office Star Space Seating 529 Series Deluxe Ergonomic Mesh Mid-Back Chair. This adjustable chair is made with R2 SpaceGrid mesh material for breathable comfort, while the adjustable lumbar support helps with proper posture. The Office Star chair boasts oversized casters for easy movement. Ergonomic office chair allows for comfort throughout the day. Recommended for performance use 6-8 hours per day. Weight capacity tested to support 275 lb. Overall Dimensions: 39-3/16”H x 27-1/2”W x 24”D. Mid back. Built-in lumbar support. Memory foam seat cushion. Waterfall seat. R2 SpaceGrid Mesh upholstery. Pneumatic seat height adjustments. Boasts 2-to-1 synchro tilt control and adjustable tilt tension. Adjustable armrests. Swivel seat. Heavy-duty nylon base with oversized dual wheel carpet casters. Assembly required.