This outdoor stool is made of a high-quality concrete and fiber mix, giving it a cool modern look, but keeping it light-weight and strong.Made of a mix of concrete and high-quality fiber, the Aylard is both durable and lightweight. Its cool black finish and unique shape give it a contemporary style. Made for outdoor use. Constructed of a special concrete/fiber composite to keep this stool light and movable. 1 Year Warranty covered on Manufacturer Defects