There are several materials for outdoor parasols: 1. Sun protection coating: Some parasols use a special coating to protect against the sun. This coating does not affect the color of the umbrella, but it can effectively block ultraviolet rays. 2. Polyester: Polyester fiber is one of the most common parasol materials. It is a soft, light and strong synthetic fiber with good water and UV resistance. 3. Polyester: Polyester is also a material often used to make parasols. It is a strong, wear-resistant synthetic fiber that is easy to clean. 4. Nylon: Nylon is a tough, durable synthetic material and one of the materials commonly used in the manufacture of outdoor parasols. It has excellent waterproof performance and durability. 5. Silk: Silk umbrellas are known for their delicate texture and gorgeous appearance. They are usually more expensive, but are ideal for special occasions. 6. Cotton: Cotton umbrellas look more traditional and are suitable for romantic occasions. Although cotton umbrellas are not as waterproof and UV resistant as other materials, they are still a comfortable and beautiful choice.