Ergonomic Office Chair, Mid Back Desk Chair with Adjustable Height, Swivel Chair with Flip-Up Arms and Lumbar Support, Breathable Mesh Computer Chair for Home/Study/Working, Dark Black

Ergonomic Computer ChairOffice Chair adopts an 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 360freely and slide quietly on any type of floor. Multi-Adjustable FunctionsThe Oyajia Office Chair can help you find the most comfortable sitting posture, allowing you to sit for a long time and stay relaxed. Adjustable armrests, lumbar support, headrest, seat height, and swing range, bring you a customized seating experience. Upgraded Quality MaterialsThe Oyajia Office Chai is made of a premium polyester mesh, high elasticity without deformation, more wear-resistant, and breathable. The cushion is filled with a high-density thick sponge, soft and durable, providing support while keeping it cool and sweat-free, making you comfortable and relaxed. Excellent Performance StandardsThe height-adjusting GAS rod has passed the SGS certification of Grade 3, more stable and safer. Heavy-duty base and nylon smooth rolling casters provide excellent stability and mobility. Easy to Assemble and AdjustYou can easily assemble the home desk chair by following the steps of the instructions. Pull up/down the lever to adjust the height of the cushion; Pull in/out to lock the backrest or turn on rocking mode, adjust the bottom knob to control the tightness of the backrest in the rocking mode.