**All-around Dynamic Fit High Back System:** The raised, integrated backrest perfectly conforms to your entire spinal curve, providing continuous and stable S-shaped support from the lumbar and thoracic spine to the shoulder blades. The built-in adaptive dynamic lumbar support intelligently follows your posture changes, keeping your lumbar spine in a natural, healthy curve whether you’re leaning forward to focus or leaning back to relax, effectively relieving pressure from prolonged sitting. **4D Flexible Armrests and Synchronized Tilting Mechanism:** The armrests offer four-dimensional adjustment in height, fore-aft, left-right, and angle, providing relaxed support for your arms in any office posture. The backrest features a synchronized ergonomic tilt design; when reclining, the seat cushion and backrest work in tandem to maintain stable balance in terms of line of sight and center of gravity, making even a short nap a complete relaxation for body and mind. **Intelligent Breathability and Pressure Distribution:** Utilizing high-elasticity, highly breathable premium mesh fabric combined with a zoned support design, it provides strong support in key areas while ensuring airflow at contact surfaces, maintaining dryness and comfort for extended periods. The thickened, high-density sponge cushion features a waterfall-style anti-pressure design at the edges, effectively relieving leg pressure and ensuring comfort even after prolonged sitting.