Since the water pressure will be too high after the product is filled with water, please do not throw the product on the ground, as this may damage the product and cause water leakage. Please handle with care, can be used repeatedly. A better alternative. The base makes the product lighter and easier to move and place than metal or stone materials. Wider application: The base can be freely combined, suitable for various types of outdoor umbrellas. It can maintain stability and safety even in inclement weather. No need to install. Just put the base together when in use. When not in use, the base can be emptied and stacked without taking up too much space.