Like all 4 Seasons Outdoor products, the Cottage chair is hand-woven with Hularo ™, a unique, easy-to-clean, flexible synthetic rattan designed to withstand the toughest elements, from direct sunlight to negative temperatures, without harming the environment, color or affect the appearance of the product. Built around a lightweight, high-quality powder-coated aluminum frame that ensures the robustness of each part for many years and prevents rust or deterioration over time. 10 Year Warranty