【ERGONOMIC OFFICE CHAIR】 – This ergonomic chair offers four key support areas: head, back, hips, and arms—plus proper lumbar support. SIHOO designs ergonomic chairs that adapt to different users with adjustable seat height, headrest, lumbar support, and recline tension. Ideal for all-day sitting and easing body fatigue. Best suited for people 5'6" to 6'2" tall. 【For Home and Work】 – Whether you're working, studying, or gaming, SIHOO chairs fit seamlessly into any setting. Use it as a student chair, computer chair, desk chair, or gaming chair. It's a comfortable and cost-effective seating solution for multiple needs. 【Breathable Mesh】 Mesh Office Chair Premium Backrest features flexible non-pattern mesh fabric while keeping your back cool and comfortable throughout the day, allowing you to sit focused and relaxed at the same time. 【High Quality & Easy Assembly】This home office desk chair is BIFMA certified and withstands up to 2504 lbs of static pressure. Our ergonomic office chair can support up to 330 lbs. Simple instructions allow anyone to put the chair together in just eight easy steps. 【Worry-Free Guarantee】Customer satisfaction is our first priority. Free returns and refunds within 30 days if your SIHOO office chair is defective or if you experience any quality-related issues. We promise to provide free replacement parts during the 3-year warranty period. If you run into any issues, please contact us and we will do our best to find a satisfactory solution. SIHOO aims to be a global supplier of specialized engineered furniture that provides advanced intelligent engineering design concepts for users around the world to learn, work and play. We established the SIHOO Intelligent Engineering Laboratory to enable our customers to receive high-quality products and superior experiences, as well as a chain system that integrates design, manufacturing, marketing, quality testing, storage and installation across all industries. In order to better apply ergonomic concepts to chairs, SIHOO has spent years of in-depth research and innovation to achieve the optimal balance between chairs and people. According to medical research, different sitting postures exert different forces on the spine, and lumbar health problems also have a negative impact on sitting postures. Lumbar stress is one of the health concerns of SIHOO designers.