Lancenix Office Chair with Adjustable Height Mid Back Support Flip Up Arms Lumbar Support Breathable Mesh Blue 20"D x 24"W x 40"H

【Ergonomic Computer Chair】office Chair adopts ergonomically designed S-shaped backrest, headrest and lumbar support, perfectly fit your body line and provide the best comfort for your back. The nylon wheels can rotate 360°freely and slide quietly on any type of floor.
【Multi-Adjustable Functions】desk chair's flip-up armrests provide comfortable support for your arms and can be folded upward when not in use to save space. Our home office chair allows flexible adjustments in height and tilt angle. The best position adjustment can be achieved through the adjustment lever under the seat.
【Upgraded Quality Materials】Computer Chair is made of premium polyester mesh, high elasticity without deformation, more wear-resistant and breathable. The cushion is filled with high-density thick sponge, soft and durable, providing support while keeping it cool and sweat-free, make you comfortable and relaxed.
【Excellent Performance Standards】The height-adjusting GAS rod has passed SGS certification of Grade 3, more stable and safer. Heavy-duty base and nylon smooth rolling casters provide excellent stability and mobility. Maximum Weight Recommendation: 225 Pounds.
【Easy to Assemble and Adjust】You can easily assemble the home desk chair by following the steps of the instructions. Pull up/down of the lever to adjust height of cushion; Pull in/out to lock backrest or turn on rocking mode, adjust the bottom knob to control the tightness of the backrest in rocking mode.
Not recommended to replace the wheels for use - the original factory configuration is the most suitable, please do not replace the wheels to avoid the problem of base breakage caused by the mismatch between the wheels and the base.