【Advanced Ergonomic Design】Ergonomically shaped backrest with targeted lumbar support fits the natural spinal curve for great comfort and support. The mid-back structure boosts sitting comfort and usability, perfectly suited for all office settings. 【All-Day Comfort】Elastic breathable mesh backrest combined with high-density sponge seat delivers a cozy sitting feel all day long. Skin-friendly mesh ensures great air circulation to keep you cool, no stuffiness even after prolonged sitting. 【Effortless Space Optimization】Flip-up armrests offer comfortable arm support while working, and can be easily flipped up to save space when not in use, improving space utilization. Versatile for bedroom, study, living room, and other scenarios. 【Customizable Head and Neck Support】Featured with a flexible adjustable headrest, you can freely adjust its height and angle (90°-137°) to get optimal head and neck support. It relieves discomfort and soreness in head and neck areas. 【Versatile Adjustment Options】360° swivel chair with multi-adjustment, the seat height is adjustable from 18.5" to 22.2" via pneumatic lever for a perfect sitting position. Rocking mode with 107°-144° tilt angle lets you relax after long hours of work.