· Multi-Adjustment & Space-Saving Design: Enjoy enhanced ergonomics with a 3D adjustable headrest for precise neck support and a height-adjustable lumbar support to fit your lower back perfectly. The chair's foldable backrest allows you to easily tuck it under your desk, saving valuable space when not in use· Premium Mesh with Cushion Options: The breathable mesh back and seat keep you cool and comfortable, even during extended use. For a softer sitting experience, opt for the high-density foam cushion version· Quick Assembly with Pre-Assembled Chair Body: Save time and effort with a pre-assembled chair body. Simply attach the headrest with two screws, and your chair is ready to use in minutes· Robust & Versatile Design: Equipped with a heavy-duty base and smooth-rolling casters, this chair is built to last and moves effortlessly on any surface. Whether for the office or home, it blends seamlessly into any environment· Ideal for Work, Study, or Gaming: Designed to meet the needs of professionals, students, and gamers alike, this chair provides reliable ergonomic support to boost productivity and focus in any activity· 【LIFETIME WARRANTY】This chair comes with a lifetime warranty. If you encounter any quality problems, please feel free to contact us. We will replace the necessary parts or full replacement for you