Ergonomic design- The bar stool is made of high quality PU leather and metal frame, a ergonomic back design with PU cushioned seat and a swivel design that makes it stylish yet comfortable. A footrest in the middle of the leg helps you sit in a relax and comfortable way Height Adjustable- The height of the bar stools can be adjusted from 24.2-32.5 inches with air-lift handle, and the bar can rotate 360 degrees. The metal frame of the bar is very strong and reliable