Ergonomic fort This task chair features ergonomic design curves that better conform to your ba. The adaptive support at the ba of the chair provides ple lumbar support even when reclining. The breathable mesh ba keeps you fy,helping you avoid a sweaty ba during long sitting hours. 90° Flip-up Armrests Our office chair features 90° flip-up armrests. If you prefer an arml chair for guitar playing,you can easily flip up the armrests and sit as you like. Additally,the foldable design allows you to stow the desk chair under the table,saving 1 of home office space – for small spaces. Multi-Adjustments Experience multi-adjustments with this puter chair! The gas lift has a 3.93" height adjustment,making this study chair suitable for both petite and big and tall indivis. Unlo the tilt funct and adjust the roing funct between 90° to 120° with the bottom knob. The 360° swivel seat allows you to enjoy personalized fort. Certified Durability The SGS class-3 gas lift has undergone 100,000+ lift tests,ensuring long-term safety and smooth operat. The BIFMA tested sturdy metal base can withstand static prure up to 1136KG. This desk chair is covered with anti-scratch mesh and filled with high-density fo,ensuring durability and resistance to deformat over prolond use. Worry-chase Illustrated assembly manual and all ned tools included in the paa. Our office chair could be assembled by one single person within 30 minutes. We offer a 30-days replacement services and 1-years parts quality as promise. 24/7 s te at your side..