Jill chairs and barstools features 2” of high resilient upholstery foam, 1-1/4” square metal tube, 1" by 1-1/2" rectangular tube, and our premium nylon glides. Joints are hand tailored, coped and brazed. Technical Bulletin CAL 117 fire retardant upholstery materials are standard. All metal chairs have an oven-baked epoxy/polyester finish. See our Metal Finish Selector for finish options.