Heavy duty oriented: This patio market umbrella base stand is made of strong and durable resin and iron, which is really hard and long-wearing. Resin made of outdoor umbrella base stand is durable but lightweight, perfect for outdoor usage. All-weather finish: Surface of this patio base stand is well-coated with water-resistant covering, the color does not fade in any patio with humid weather. There is also less worry of getting any color on cloth while carrying or on floor when kept in storage. Market standard base: This patio umbrella base stand is equipped with rubber adapters that fit the market standard umbrella pole diameter: 3.8cm/1.5’’, 4.8cm/1.9’’. It can fit into most patio umbrellas with more choices.