Ergonomic Office Chair: Do you often experience back pain and soreness due to uncomfortable chairs? HeroSet comfy ergonomic chairs can help you get rid of your troubles, with 7 support points (head/neck/shoulder/back/waist/hips/hands) for optimal sitting posture and improved comfort to boost efficiency during work and study sessions. Flip-up Armrests& Adjustable Functions:: Flexible adjustable height from 43 to 47 inches, 3 inch adjustable headrest adjustment and 90-120° tilt adjustment function, making the desk chair suitable for your various sitting positions and activities such as working, reading, and relaxing. The space-saving 90° flip-up armrests can relieve hand pressure while you work/rest. Executive Leather Chair: Why is the HeroSet office chair more comfortable to sit in? Breathable and easy-to-clean PU leather upholstery provides consistent comfort by ensuring ventilation and maintaining coolness The five-layer cushion structure prevents collapses, where PP cotton and high-density sponge padding provide immersive enjoyment, and the silent spring seat (20 spring packs) guarantees that the cushion is appropriately elastic and not easily deformed. Reliable Mobility: HeroSet home desk chair featuring silent PU casters to protect floors. Robust SGS-certified three-level air rod and reinforced explosion-proof base make this leather office chair with wheels and arms support up to 400 pounds for enhanced safety, stability, and longevity. And this chair's frame made of FSC-Certified wood. Satisfied After-Sales Service: The big and tall computer chair assembly process takes just 20 minutes with detailed instructions and tools provided. HeroSet high back office chairs offer a 3-year service, and any issues can be promptly resolved through our after-sales service team.