The Posture Task Chair's contemporary curves give it a sleek modern look, but it is the exceptional function of thoughtful ergonomic design that gives this chair it's value. A body curved seat and back panel provide seated comfort, while gas lift seat height adjustment, knee-tilt smooth seat tilting action 7-position adjustable height arms and a 5-point wheel caster base offer a similar degree of practicality for the office. A variety of color upholstery finishes in stain resistant fabric round out the appeal of the OFM Executive Task Mid-Back Chair. Meets or exceeds ANSI,BIFMA standards. The American National Standards Institute (ANSI) and the Business and Institutional Furniture Manufacturer's Association (BIFMA) work together to produce voluntary standards that provide a common basis for evaluation of product safety, durability and structural adequacy. Available in multiple finishes.