4-Piece 180 lbs. Patio Umbrella Base Water/Sand Filled, Suitable for Cantilever Umbrella with Cross Base in Black. Material: Made of HDPE, this umbrella base is designed to help your umbrella resist wind, sun, and bad weather. It serves as the essential foundation for enjoying your patio life. When you choose our base, you'll be able to weather any storm. The HDPE material base weighs up to 180 lbs when filled with water and sand. Additionally, it comes with a powder-coated extension pole that is waterproof and rust-resistant. The exquisite pure black dark decorative finish brings a touch of sedate elegance to the whole patio umbrella. Compared to a black plastic umbrella stand, this well-designed umbrella base is more suitable for those with discerning taste. Material: Polyethylene.