4pc Heavy Duty Cantilever Offset Umbrella Stand Water Sand Holder Affusion Base4 Piece Patio Cantilever Offset Umbrella Base Stand Heavy Duty Umbrella Holder Weather resistant, UV protection that prevents color from fading. With the ability to be filled with water or sand, can also be filled with cement. An easy fill spout on each base plate makes for convenient filling, cleaning, and storage. Sturdy 4 plate construction that supports your umbrella with enough stability to withstand almost anything the weather throws at it.