Enjoy relaxed long-hour seating with our office chair! This office chair has a breathable mesh surface for increasing airflow with good heat dissipation. The high-density sponge cushion features 8cm thickness to make sure lasting plumpness and comfortable support. The flip-up armrests enable the chair to convert into armless chair for saving spaces. This swivel office chair allows you to easily change the directions. With a 90-120 degree rocking tension control, the backrest can be adjusted to the most comfortable position. 10cm height adjustment guarantees universal compatibility with tables and desks to ensure a proper seating posture. The ergonomic back with lumbar support offers better protection to your spine and also reduces fatigue during 8-hour seating.