Specification: Color: Black Material: PP handle nylon wheels mesh sponge Overall dimension: 22.5" x 22.5" x (35.5-40.0)" (L x W x H) Adjustable seat height: 16.0" - 20.5" Seat size: 19.5" (L) x 19.5" (W) x 3" (H) Maximum weight capacity: 265 lbs Package includes: 1 x Office desk chair 1 x Instruction Description: This large size office chair offers you the much larger sitting area which can hold up to 265 lbs. This excellent office chair is perfect for your office study room and meeting room. The lumbar support at the backrest and ergonomic armrest perfectly match with human body line and support your spine and waist. Pneumatic height adjustment and 360 degree rotation can meet your needs of different desk height and daily fetch-up. High-density sponge cushion with a breathable mesh cover provides you a comfortable seat area accompanying you the whole day working. If you are looking for the office chair don't hesitate to buy it! Large size seat with high-density sponge cushion providing a more comfortable sitting area Ergonomic armrest and backrest matching with your waist and body line Breathable mesh cover resisting transformation and abrasion Lumbar support system holding your waist for a long time& keeping in a right position Pneumatic height adjustment meeting the needs of different desk height Five nylon universal casters no-marking no scratches Maximum load-bearing capacity 265 lbs Perfect for office study room and meeting room