Umbrellas are made of a variety of materials, including cloth, paper and plastic. The most common material used for umbrellas is cloth. Cloth umbrellas are made of a variety of fabrics, including cotton, polyester and nylon. Umbrellas can also be made of paper or plastic. Paper umbrellas are usually made of waterproof material, such as oiled paper or waxed paper. Plastic umbrellas are usually made of waterproof materials, such as PVC or polyurethane.