【Ergonomic Lumbar Support】- The ergonomically designed backrest of our ergonomic office chair has prominent lumbar support to fit the natural curvature of the spine. The Computer Desk Chair with mid-back brings quality and comfort to any office.【Comfortable Seat】- Ergonomic features an all-elastic premium mesh back and a high-density sponge seat making the mesh office chair a good choice for all-day comfortable office seating. The unique mesh design is skin-friendly and breathable, which keeps you cool all day.【Space-saving】- Flip-up armrests are available and won't be in your way when not in use. The Armrests of the computer chair provide comfortable support for your arms and can be flipped up to save space effectively while not in use.【Multifunctional Mechanism】- The seat height of this 360° Rotating chair could be easily adjusted by the pneumatic adjustment lever, and the adjustment range is 18.5-22.2 inches. Besides, the rocking mode helps you to relax from hard work. It is perfect for the office, bedroom, study room, living room, or gaming room.【Smooth Movement & Stability】- Our comfy office desk chair comes with smooth and multi-direction casters, which allow you to move the chair around effortlessly. They can run smoothly on tile, wooden floors, carpets, and other floorings. The large 5-star base increases stability even at the full height range. The maximum weight capacity is 250 lbs.【Easy Assembly】 - The home office chair comes with installation instructions and all necessary hardware& tools. We also offer a video to help you, allowing the office chair installation to be completed within 10-15 minutes.