This computer desk chair with a middle back design, rectangular ornament not only as decoration, It can provide good lumbar support makes you feel comfortable. High quantity office chair needs all the parts more reliable and sturdy, this desk chair does include a weight limit of 275 pounds. This office chair comes with all hardware & necessary tools. Follow the desk chair instruction, It took maybe 10-15minutes. Desk chair using high-density sponge cushion, more flexible, soft texture slow down the pressure of the sedentary.