Ergonomic Full-Body DesignSpecifically designed for pressure dispersion and body support, the backrest features 3D wrapping lumbar support with dual-layered high-density foam and high-loft fiber, conforming to the curves of your neck, shoulders, and back. The oversized adjustable lumbar pillow provides personalized support, delivering a sofa-like embracing comfort. Multifunctional Comfortable SeatingThe spacious seat with no restrictive side wings combines pocket spring lumbar support for enhanced comfort and breathability, keeping you cool during long hours of sitting. The adjustable footrest allows you to switch effortlessly between work and relaxation modes for ultimate convenience. Durable and Stable ConstructionEquipped with a BIFMA-certified five-star base that supports up to 300 lbs, and an SGS-3 gas lift certified for over 120,000 lift cycles. Compared to nylon armrests, the metal armrest frame offers superior strength and durability. The wide seat and high backrest