Ergonomic Designs: Curved backrest flawlessly fits the human body and supports the spine’s natural curve, alleviating back tension and discomfort during long office/meeting/studying sessions. This computer chair has a rocking feature and can be adjusted to different seat heights within a range of 10cm to match various sitting positions Pneumatic Seat-height Adjustment: The seat height of this computer mesh chair can be simply adjusted from 36.5cm/14.4'' to 46.5cm/18.3'' by a little lift at the lever under the seat according to your needs Keep Cool, Enjoy All-day Comfort: This mesh desk chair features a densely knitted mesh backrest, which allows better ventilation even after prolonged use. The seat filled with high-resilient foam provides a spacious sitting area of 48.5cm W x 47.5cm D, rendering long-time sitting much more comfortable for users of most body sizes Swivel Home Office Chair: Twisting and turning about is integral within the office. So this ergonomic chair adopts a stable star base and comes with 5pcs 360-degree swivel wheels, ensuring fluent and quick movement and keeping up your quick pace of work Easy Assembly Required: We provide all necessary hardware and tools, and an illustrated installation manual to help you set up this chair