... steel frame and make seat more strong, and PU foam let you seat very comfortable, the seat cover is flexible, ... cloth, PVC 1. Steel tube frame 2. Folding seat 3. High grade simulated leather/carbon fiber/cloth ... most durable, high quality and non-fading materials 2) Advantageous quality to price ratio 3) Selling well ... Blue, yellow, red, black, and others. racing seat Racing Car seats S606B