Perfectly Contoured:headrest, backrest, and lumbar support of our ergonomic office chair provides optimum comfort for your back, allowing you to stay productive all day long Versatile Flip-Up Armrests: armrests can be left down for tasks that require arm support or fully flipped up when not needed, adapting to different user needs and sitting positions Adjustable Backrest & Lumbar Support: customize the backrest to its 20-degree tilting angle, and the lumbar support to the 50mm height adjustment, providing maximum comfort during long work sessions Durable Construction:desk chair has a sturdy cylinder certified to SGS standards, a heavy-duty metal base, and high-quality rolling casters providing stability up to 250 pounds Space-Saving Design: home office chair features flip-up armrests that allow you to easily tuck the chair under your desk when not in use, perfect for small spaces Comfortable Padding: The generously padded seat uses breathable high-density sponge and durable mesh upholstery to prevent overheating, while the elastic mesh molds to your shape but retains its form through years of use Easy Mobility: With the armrests folded up, the chair can be moved close to the desk without the armrests bumping into the desk edge, making it easy to get close to the desk for tasks that require proximity Adjustable Seat Height: Our office chair height is adjustable from 100cm to 110cm, providing the best working posture and tilting angles to relieve pressure on your hips and legs Multi-Adjustable Mechanisms: 5 user-friendly adjustment functions allow you to find the most comfortable sitting position and keep you relaxed for long hours Upgraded Quality Material: Surface of backrest and cushion is made of high-quality polyester mesh, high elasticity, wear-resistant, and breathable, ensuring comfort and durability