HEALTH LINE MASSAGE PRODUCTS BIFMA Standard Black 350 lbs Weight Capacity Ergonomic Office Chair Bonded Leather Hydraulic Swivel Gas Lift Back Support Chair Height Adjustable Cushions Set up Dimension: 23.6" W x26.4" D x 37.4"-41.3"H; Ergonomic thick padded seat & back support design, more comfortable and beautiful than other office chairs. Bonded leather seat upholstery, water-proof & oil proof, easy to clean, makes the chair become more durable. Meet BIFMA standard cylinder, much safer than others. ISO 9001: 2000 standard certified manufacturer. BIFMA sponsors the development of safety and performance standards, provides industry statistics and forecasts, advocates for regulatory conditions that foster value and innovation, and serves as a forum for member cooperation and collaboration. 22inches 5 star Polyurethane faux base + 5 rubber casters, make the stool stand sturdy, become easy to move and prevent your luxurious wood floor from scratching. Max weight capacity: 350lbs.