SIHOO B100 Pro Ergonomic Mesh Office Chair, Adjustable Computer Chair with 4D Dynamic Lumbar Support, 3D Extra Wide Headrest, Desk Chair with 4D Flip-Up Armrests, 90-135° Tilt Lock and Footrest

• 4D Adaptive Dynamic Lumbar Support - Say goodbye to the feeling of a hollow lower back! This office chair features an advanced 4D adaptive dynamic lumbar support system that automatically adjusts support intensity and angle according to changes in your sitting posture. Whether you are sitting upright at work or leaning back for leisure, it stays in close contact with the curve of your lumbar spine, providing optimal support and effectively relieving pressure on the lower back caused by prolonged sitting.
• Multi-Dimensional Adjustable 4D Flip-Up Armrests - Armrests are more than just armrests; they are an extension of your comfort experience. Featuring a 4D design, they support forward/backward adjustment, left/right rotation, recline synchronization, and flip-up adjustment, allowing you to easily find the optimal position to support your arms. The unique flip-up function also makes it convenient to push the chair completely under the desk during work breaks, freeing up more office space and keeping your work environment tidy and organized.
• Hidden Footrest & Adjustable Recline for Work, Rest, and Everything In Between – Choose from three preset recline angles — 110°, 123°, and 135° — to seamlessly transition between focused work, relaxed thinking, and quick naps. Need to fully unwind? Pull out the hidden footrest, kick your feet up, and let the day melt away. Whether you're powering through deadlines or taking a well-deserved break, this chair offers the ideal posture for every part of your day.
• 3D Extra Wide Headrest - The specially designed 3D extra-wide and extra-large headrest not only looks stylish and impressive but is also highly functional. Its larger surface area provides neck support for users of different heights. It supports multi-dimensional adjustment, ensuring the headrest perfectly conforms to the natural curve of your neck, effectively distributing the weight of your head, relaxing your cervical spine, and allowing you to fully relax during short breaks.
• Quality & After-Sales Dual Guarantee - Quality that stands the test! This chair has not only passed rigorous SGS and BIFMA standard tests, proving its durability, sturdiness, safety, and reliability. We also offer a 3-year worry-free warranty and a 30-day hassle-free return service, allowing you to enjoy a comfortable office experience with complete peace of mind.

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