Easily fill the Shade Trends Deluxe Water Fillable Base for Shade Trends Trigger Lift Cantilever Umbrellas, and you’re ready for fun in the sun! In the off season, drain this umbrella base and easily store it. When it’s empty, this base weighs only 29 lbs. When completely filled with water, it’s 154 lbs. This base is crafted of durable polypropylene plastic and is designed exclusively for use with Shade Trends’ Trigger Lift Cantilever Offset Umbrellas.