Umbrella skeletons usually have 6 to 8 ribs, and some can reach 24 ribs, which are mainly used for straight umbrellas. Parasols are generally 6, 7, and 8. The most common is 8-ball iron ribs and steel, but to save money, there are now many 7-ball umbrellas. 6-rib umbrellas and 7-rib umbrellas are often used as ultra-light umbrellas to block the sun. Most of the materials are made of aluminum alloy and resin bones.

    There are many materials for the ribs of umbrellas, and here are the materials that are often used by most umbrella manufacturers.

    Advantages of aluminum bone: lightweight, cheap price;

    Advantages of chemical fiber bone: lightweight, strong wind resistance;

    Advantages of carbon fiber bone: lightweight;

    Disadvantages: Wind resistance is generally the most expensive of all materials.

    Advantages of wooden bone: Traditional Chinese umbrellas are often used;

    Advantages of iron frame: strong and durable, the price is slightly more expensive than an aluminum frame.