Built to withstand a range of climates including hot sun, snowy winters, and strong coastal winds. Weatherproof. Will not splinter, crack, chip, peel, or rot when exposed to the elements. Polywood lumber is a proprietary plastic containing recycled milk jugs and detergent bottles. Easy to maintain. Only needs washing with soap, water and soft bristle brush. No other maintenance required. Attractive appearance. Bright, cheerful colors mimic the appearance of painted wood.