According to the picture you provided, this is a rubber balloon, which is made of rubber and has good elasticity and inflation performance. This kind of balloon usually has the following purposes: 1. Decoration: This kind of large rubber balloon is often used for decoration in festive occasions, such as opening ceremony, shopping mall promotion activities, etc. , play a decorative and eye-catching role. 2. Communication: This kind of balloon is also often used for high-altitude communication or meteorological observation. Signal transmission, image sensing, etc. It is carried out by sending balloon-driven equipment or instruments to a higher height. 3. Sports and competitive use: This kind of balloon is also commonly used in some competitive sports, such as gas volleyball and gas basketball, for entertainment and recreation. 4. Advertising: Printing advertising words or LOGO on the outside of this balloon and then flying it can achieve low-cost advertising effect, attract people's attention and convey marketing information. In addition, this kind of rubber balloon is often used by children to play as an air cushion to prevent injuries, and can also be used as a teaching sample for simulating balloons. To sum up, this large rubber balloon is mainly used for decoration, communication, sports and advertising. It has good elasticity and inflatability, durability and rich colors. This is an ordinary and practical balloon.