The 460cm patio double-side umbrella provides ample shade to keep you cool and protect you from the hot sun. This umbrella is made of thick steel poles and quality polyester, anti-rust and waterproof, and is great for outdoor use. It is worth mentioning that this patio twin umbrella comes with a rugged base, which weighs up to 100kg when filled with sand. The extra-large double-sided design also matches your desk and chair and provides more shade area. You can easily use the crank to turn it on or off, which is laborsaving and safe. When you are not using it, the umbrella cloth has a rope that holds the umbrella cloth well. Vents give you more coolness and safety because it allows airflow and reduces wind pressure. Assembly is easy and can be done without the aid of tools.