Luxury Ergonomic Heavy Duty Office Chair with Lumbar SupportSTURDY CONSTRUCTION This high back executive chair is built of long wearing polyester mesh, durable plywood frame and strong plastic base, providing you a steady sitting experience. With a 136kg 300lb weight capacity, this chair is suitable for most individuals. FIT FOR YOUR BODY SHAPEThis swivel computer chair is thoughtfully designed with S shaped back to fit in the curvature of your back and lumbar. The lumbar support can be adjusted up and down to