IN BOX! Sells new online for $379. Our price $225. All Function Conforms to your Life: This ergonomic chair is high-end office chair series designed by famous designers(Hans Thyge & Co design studio). With Height Adjustable Lumbar System and Depth Adjustable Seat, 3D Armrest, 145 Degree Back Tilt, High Elastic Mesh, Environment Friendly Cotton Seat, Aluminium Alloy Wheelbase and 360° Wheels. We do the best in every detail fits your body and working needs. Adjustable Ergonomic Double Back Support: The Ergonomic desk chair designed with a double-back structure, it can fit your body well. Giving your lumbar the biggest support to achieve the healthy sitting posture. The backrest can be moved up and down(3.15inch) to provide the customized support and comfort for your daily working, even if you work for 6-8 hours. The silver aluminum J-bar structure on back is sturdy and durable. Add a sense of design and nature to the chair, you will love it! Heavy Duty Chair with Seat Sliding Function: The 3.15″ adjustment of seat depth provides a comfortable sitting feeling for users with various heights and weights. The cushion shape is high in the middle and low on the sides reduces pressure on the buttocks and thigh, long time sitting doesn’t block circulation either. Our 5-Point WheelBase is made of aluminum alloy gives greater stability and strength over iron. The sturdy aluminum alloy base makes this chair ideal for adults up to 300 pounds. High Quality Elastic Mesh: Our chair mesh is a high elastic, skin-friendly and breathable mesh. It avoids sweating and sticking, also smooth. Compared with other mesh products, it’s wear resistance has passed more than 100,000 times. Don’t worry about change shape. It’s durable with high elasticity as well as great comfort. It provides the users comfort at all times. Easily Installed and 5 Years Customer Service: Our ergonomic desk chair comes with all the hardware and necessary tools. It can easily be installed and ready to use in about 10-15 minutes. It has a number of well-known certifications in the field of American furniture, like BIFMA, GREENGUARD Certification and so on. D00239SH (AMZ 1M VN)