Our all-weather wicker furnishings are crafted from premium quality HDPE (high-density polyethylene) resin, which is handwoven over reinforced rustproof aluminum frames. Lab tested for fade-, sag- and mildew resistance, our all- weather wicker is virtually maintenance free. To clean, use only a mild soap and water solution and rinse thoroughly. Do not store furniture upside down as water may accumulate in frames and cause damage in freezing weather.