Marsail Ergonomic Mesh Office Chair High Back Desk Chair Adjustable Lumbar Customizable Support, Superior Comfort: Our home office desk chair provides full ergonomic support with a contoured S-shaped backrest that promotes optimal spine posture. Adjustable 2D headrest, recline from 90 to 120, seat height range of 15.7? to 19.7?, and 2D adjustable armrests, ensuring comfort for users of different heights during long hours of sitting. Comfort-Enhancing Flip-Up Armrests: The ergonomic gaming chair features 2D armrests with soft padding for comfortable arm and elbow support. Adjust them by 1.18 inches up and down to match your desk height and preferred sitting position. When not in use, simply fold the armrests up 90 to conveniently slide under your desk, maximizing space in your gaming or work area. ? Precise Lumbar Support: Marsail ergonomic desk chair, different from others on the market, features an adaptable lumbar support that can adjust 0.8? forward and backward and 1.2? up and down. This exclusive design ensures targeted lumbar support that aligns with the spine for less back pain during your workday. Upgraded Soft Cushion: Our office chair for heavy people features a thick 3.2? high-density foam seat cushion that maintains its shape and provides sofa-like comfort, even after extended use. The breathable mesh fabric prevents heat and moisture build-up, keeping you cool and comfortable during long sitting sessions. Proven Durability: The desk chair comfy is BIFMA certified for long-lasting durability and exceptional performance. Featuring a Class 3 SGS gas lift, large 27.6? steel base, and 360 smooth and quiet caster wheels, this gaming chair is a reliable seat solution for up to 300 lbs of weight.