Ergonomic Office Chair, Home Desk Chairs with Lumbar Support, Executive Computer Chair with Flip-up Arms, Height Adjustable High Back Swivel Rolling Chair, Black

【Ergonomics & Comfort】 The ergonomically designed backrest helps relieve the pressure of back pain. Breathable mesh backrest promotes back air circulation and prevents sweating. Meanwhile, the 3.95-inch thickened, highly elastic concave foam seat cushion resists deformation and provides all-day support. 【Versatile Adjustment】Our office chair height can be adjusted in the range of 14.49"-22.24", and the lever under the seat can be adjusted to suit different states. You can use the tilt tension adjustment device to control the swaying angle of the backrest and choose a sitting position that is suitable for long-term comfort. 【Flip-up Armrest】The armrests of this office chair can be flipped up and down to meet your different needs. The inverted armrests of the office chair have breathable padding to provide comfortable support for your hands. The armrests can be flipped upward so that the entire chair can be easily pushed under the desk to maximize space. 【Stable & Smooth Movement】The sturdy five-star base and high-quality air lift function ensure the office chair's excellent stability and durability. The office chair can withstand up to 330 pounds of weight. In addition, 361-degree rotatable casters allow you to move smoothly and silently around the room without worrying about scratching the floor surface. 【Installation & After-sales Service】The computer office chair comes with all the necessary installation tools. Following the instructions, you can finish the assembly in 15 minutes. If you have any questions, please contact us. Our professional customer service team will reply you and help you within 25 hours.