【90° Flip-up Armrests】Rattantree ergonomic chair, adjustable armrest can be turned up 90°, put the chair under the desk for saving space. The arms of the computer chair provide comfortable support for your arms while working and resting. Office chair can be used in a range of environments including living rooms, bedrooms, home offices and study rooms. 【Ergonomic Backrest】The curved backrest is anatomically constructed to fit the contours of the body perfectly, relieving back and spinal pain. Mesh backrest with lumbar support provides strong support and maintains breathability. This armchair keeps you comfortable after a long day of gaming or working at home. 【Comfortable Cushion】The seat is padded with soft foam and covered with elasticated mesh to ensure skin-friendly and comfortable during extended use. The cushion is suitable for a variety of sitting positions, giving a sofa-like feeling This home office chair will help you reduce fatigue and keep you productive all day. 【Smooth Movement & Stability】Rattantree desk chair equipped with metal base to improve durability and aesthetics. Multi-directional casters allow you to move the chair effortlessly and smoothly across the floor. Adjust the height of the office chair (10cm), suitable for different sizes of adults, teenagers. 【Assembly & after-sales】Comes with necessary assembly tools and assembly instructions, can be assembled in a few simple steps. If you have any questions about the product, don't hesitate to reach out to us on Amazon, we will offer you professional solutions within 24 hours.