Heavy Duty Office Chair: Sturdy 5-point metal base ensures stability 360° swivel silent wheels allow effortless movement in any directionComfy Office Desk Chair: 3" thick high-density foam seat prevents sagging Double-layer breathable mesh fabric keeps air circulating for extra comfort during long sitting hoursErgonomic office chair with adjustable lumbar support (forward/backward/upward/downward) fits waist curve, relieves spine pressure Also adjustable seat height and headrestErgonomic office chair with foldable armrests—push directly under desks to save space Press buttons on armrests to easily raise or lower themThe mesh office chair assembles in 15-20 minutes with clear instructions and tools Contact us for effective solutions if you encounter quality issues