Made from substantial 100% High Density Polyethylene. The sustainabiliy of this furniture cannot be outmatched by any other casual furniture product. Cleans with soap & water, never needs paint or stain. All hardware components utilize stainless steel and aluminum alloys, combined with heavyweight construction to endure years and years of sun, wind, rain & snow. Soldura material is UV stable, environmentally friendly, recyclable, and offers a 5 year warranty for material and one year warranty for workmanship. It will not rust, splinter, crack or peel.