Comfy Ergonomic Office Chair: Designed to enhance sitting posture with a thick headrest, soft cushioned armrests, and an S-shaped backrest that conforms to your body's curves. Provides sufficient support and comfortable wrapping, making it ideal for office use. 6 Points Vibration Massage: Features 6 vibration massage points across the back, waist, and buttocks, offering 5 modes and 3 intensities to relieve physical fatigue. The backrest includes a heating function to promote blood circulation and ease muscle stiffness. Quality Material & Durable: Made of easy-to-clean, breathable PU leather. The thick cushion combines memory foam and high-elastic springs for soft yet supportive comfort. The sturdy metal base, gas lift, and wheels support up to 500 pounds. Adjustable Multiple Angles: Seat height adjusts up to 4 inches, with a spacious seat for freedom of movement. The backrest locks between 90 and 135 degrees, and the extendable foot pedal provides additional leg support for various com