Crestlive Products is dedicated to offering premium outdoor living solutions for American families. Made with a sturdy metal frame and coated with powder, this umbrella is designed to last. The wind vent promotes air circulation and adds elegance to the offset shelter of the double top. Each of the 4 black plates are made from high-strength HDPE material that are rustproof and waterproof. Approximately 220 lbs of holding weight when the umbrella base filled with water or an awesome 240 lbs when filled with sand. Or even heavier when combined with both sand and water. Additional Details: Dimensions of umbrella: Dimensions of base: