A rubber ball is a spherical object made primarily from rubber, a flexible and durable material. These balls are often used in various sports and games, such as basketball, tennis, and dodgeball. They come in different sizes and colors, making them suitable for both children and adults. Rubber balls are designed to bounce when thrown or dropped, thanks to their elastic properties. They can be solid or hollow and may be filled with air or other materials to enhance their performance. Commonly found in playgrounds and gyms, rubber balls are popular for recreational activities and exercise.