Very airy and light construction, and yet more than sturdy enough due to the frame being made of solid, square-section, tubular stainless steel with a nice brushed finish.  Perfect height for our kitchen island counter, and the low back design makes them easy to tuck away completely under the counter out of sight.  The seat cushions are upholstered in a sort of stretchy, shiny-smooth vinyl material.  We got ours in white, not sure how it would look in black but it feels of rather good quality.  Without even taking into account the extremely reasonable price, what a deal these bar stools were.