Diamond stitch vinyl upholstery. The seat pan is stamped 3mm thick high-tensile steel and features ribs and indents for added rigidity and stiffness. Comes with four threaded adjustable mounting bosses and a black electroplated finish. The foam is medium-density molded polyurethane for longevity and comfort. Ready to ride with a hand stitched vinyl upholstery. Approx. dimensions: 10" (25.4cm) wide x 13" (33cm) long.