Heavy duty oriented: Each plate can be filled up with 15L of water(50lb of sand) and four of them can hold up to 60L of water (200lb of sand) in total. Heavier bearing capacity ensures the cantilever offset umbrella base has enough weight to ensure the banana parasol stands upright to against windy weather.Interlocking spin: Four pieces of plates are interlocked with four u-shaped metal spins, these spins connect and settle the plates together to hold patio umbrellas.Built-in handle: The base stand is thoughtfully designed with a built-in handle, easier to place in a specific patio place.All weather materials: Our fillable patio umbrella base is made of quality HDPE plastic to ensure a high durability and wearability. Aiming for long-term usage to withstand all kinds of weather. Treated with a fade-resistant coating makes sure the color does not fade either under strong UV. exposure or humid environment.Flexible placement: The patio umbrella base can be placed in any position you want. It gives you the safety that it will support the umbrella in any position.