Very study metal base; easy to assembly. Ergonomic design for all-day comfort Pneumatic seat-height adjustment; dual-wheel casters Overall size: L24.4 x W22.0 x H33.5-38.2 inch Gaslift have passed the BIFMA testing standards.CA117 fire retardant foam,1-year limited warranty. › See more product details United Office Chair keeps bringing best sitting experience to customers all over the […]