● Equipped with a large reservoir that can be filled with sand or water to add stability● 2 adjustable knobs and 3 adapters ensure a snug fit for various umbrella sizes● Suitable for patio umbrella poles of 1.89"/1.5"/1.42" 48/38/36 mm recommended with 6-10 ft/180-300 cm umbrellas● Crafted of premium HDPE designed to withstand the elements built to last● Equipped with protective pads on the bottom for enhanced stability● The simple structure allows for easy assembly no extra tools required● Portable and lightweight only weighs 5.5 lbs/2.5 kg easy to store and transport● Suitable for various residential and commercial uses: patio garden coffee shop etc