Adjustable Black Office Chair with Swivel Base

This is an adjustable office chair, likely designed for desk use, featuring a simple and utilitarian aesthetic. The chair's primary construction appears to be a dark, possibly black or dark gray, molded plastic or composite material for both the seat and backrest. The backrest is relatively low and solid, lacking any significant ergonomic curves beyond a subtle inward slope towards the top, suggesting a minimalist design. The seat pan is flat and wide, indicating a standard utility chair. It is supported by a five-star swivel base made of what appears to be polished or brushed metal, likely aluminum or steel, providing stability and mobility. Each arm of the base terminates in a black roller caster, allowing for easy movement across a floor surface. A central column connects the seat to the base, suggesting height adjustment capabilities, though the mechanism is not clearly visible. The overall condition appears to be used, with some visible dust or light wear on the seat and backrest surfaces, but no significant damage like cracks or tears are immediately apparent. The style suggests a modern or contemporary design, likely manufactured in the late 20th or early 21st century. The simple construction indicates a focus on functionality and possibly mass production. There are no visible maker's marks or distinguishing labels in the provided image.