● Designed with a large reservoir that can be filled with sand or water to add stability● Comes with a built-in handle on the bottom only weighs 4.5 lbs easy carrying● Equipped with protective pads on the bottom keeping the umbrella base stable● Made of high-strength HDPE material waterproof aging-resistant durable enough● Equipped with 2 plastic inserts suitable for most umbrella poles 1.5"/1.9" ● Equipped with a hand-turn tightening knob for securing the umbrella on the base● Suitable for various residential and commercial uses: patio garden coffee shop etc