● Detachable 4 Plates: The umbrella weight is compatible with offset umbrellas equipped with a cross base. 4 detachable plates can be stacked together for storage with less space taken.● Study Construction: The offset umbrella base is made of heavy-duty HDPE plastic which is rugged and weather-resistant sun-protection that prevents cracking and is easy to maintain.● Fill Water or Sand: The cantilever umbrella base can weigh up to 180 lbs when it is filled with sand and up to 130 lbs when filled with water so your outdoor umbrella will remain upright in heavy winds.● Easy-to-Fill Spouts: Each plate has a fill spout and a twist cap which make the patio umbrella base can be filled easily and quickly.● Umbrella Stand for Cantilever: Overall dimensions: 41"(L) x 41"(W) x 3"(H). Dimensions of per plate: 20"(L) x 20"(W) x 3"(H). A versatile essential for lounging beneath an offset umbrella.