Keep a cantilever or offset patio umbrella securely grounded with this four-piece SUGIFT fillable base set. Made of durable HDPE, the interlocking plates can be filled with sand or water to provide up to 180 lb of hold-down weight with sand or up to 130 lb with water. Each plate includes a fill spout and twist cap for convenient filling and draining without tools. The assembled square base measures 41 in L x 41 in W x 3 in H, while each plate measures 20 in L x 20 in W x 3 in H. The center opening fits umbrella poles up to 2.5 in in diameter. When not in use, the plates stack flat for compact storage. The coffee finish complements outdoor living spaces, and the base wipes clean for easy maintenance. Assembly is required. Four interlocking HDPE plates create a square, fillable base for cantilever and offset patio umbrellas. Fill with sand for up to 180 lb of ballast or use water for up to 130 lb. The tool-free fill spouts and twist caps simplify setup, draining, and seasonal storage. Fits umbrella poles up to 2.5 in in diameter and stacks flat when not in use.