This bar stool is made of high quality cast aluminum and is triple polished with a powder coated paint and an antique finish. It won't chip, flake or scratch. Plastic foot levelers are included. The swivel mechanism is made of high quality composite material manufactured by 3M. Cushions are made of Sunbrella fabric, a water repellent material, preventing mildew and fading. Inner seat cushion is made of foam with a Dacron wrap. Total thickness is 2".