1. Adjustable backrest design: One of the biggest highlights of this office chair is its flexible adjustment function of 90-135 degrees of backrest tilt. Users can easily adjust the backrest angle according to personal preferences or work needs, and switch freely from upright office to comfortable resting state, effectively relieving the back and neck pressure caused by long-term sitting. 2. Height-adjustable seat: The seat design of bigzzia office armchair has a height adjustment function, with an adjustment range of 10cm, ensuring that users of different heights can find the most suitable sitting height for themselves. This design helps to maintain a correct sitting posture and reduce waist and leg discomfort caused by improper height. 3. 360° rotation function: The 360° swivel chair is equipped with a 360-degree rotating base, allowing users to easily turn in their seats, making it convenient to communicate with colleagues and access documents or items in different locations on the