-Premium HDPE material is durable and crack-resistant
-Each plate can be filled with 5.2 Gal sand
-Fill the umbrella base easily with spouts
-Equipped with hidden handle for easy movement
-Each plates can be stacked up to save space
-Circulation holes add friction and stability
-Ideal for various places with convenient storage and transport design
-Holes for inserting locking pins facilitate tight connection

Weather-proof Material: Constructed of all HDPE material the square umbrella base is resistant to various weather conditions to support long lifespan. Besides the premium material is rugged enough to endure strong impact.
Detachable and Stackable Plates: The four 20 "x 20" plates come with holes for you to insert locking pins (not included). Therefore you can lock the four plates tightly to obtain a perfect cantilever umbrella base. When not in use they could be stacked for space-saving storage.
Easy to Fill Spout: : Built-in spout makes it easy to fill or empty the heavy umbrella seat simply by unscrewing the umbrella cover. Besides the spot and screw cap will form a sealed environment to prevent water leakage during use.
Large Filling Capacity: Each plate can be filled with 3.4 gal water or 5.2 gal sand to add weight of the base. Therefore the heavy duty base can provide powerful support for your cantilever offset umbrella in windy conditions.
Portable and Lightweight Design: When not filled with weighted items each plate only weighs 4.5 lbs allowing you carry them with ease. Besides the 4pcs umbrella base comes with handle to help you transport it to garden yard poolside effortlessly.