Viewee 22 lbs Heavy Duty Patio Market Umbrella Base Stand (16.5")This umbrella base is made of resin, waterproof, aging resistance, wear resistant, anti ultraviolet strong, permanently not corroded. This umbrella stand with classic decorative pattern and black finish maintains its appearance for years to come, help you enjoy your patio umbrella. This patio umbrella base equipped with adjustable piston, a wide range of application, can be adjusted according to the thickness of the umbrella column. Umbrella Pole