Product Features-Adjustment Function：You can adjust the backrest to the most suitable angle in the range of 90°to 145°for fixing. Whether it is used for working, gaming or relaxing, you will enjoy the most comfortable position.Adjustable height seat with pneumatic control easily adapts to your height, gaming desk or workstation Lumbar pads can be adjusted up and down as needed for better support. -Flexible Mobility & Stable Base：360°rotating seat allows you to communicate with players or colleagues around you in an all-round way.The universal wheel moves smoothly and does not produce noise, so you are not bound by distance, and further realizes freedom of movement.Sturdy five-star base is strong and durable, ensuring the safety of the office chair. -100% Satisfaction Guaranteed: We provide 12 months' worry-free warranty and friendly customer service. If there is any question please feel free to contact with us, our experienced customer service team will response in 24 hours ASAP.