These balloons have an automatic sealing valve. They can be filled with air so they can be fixed to the wall or can be filled with helium so they float. They will make a great decoration for your Children's birthday party. Or buy as a surprise gift for any occasion! Please note that these balloons will come flat and not inflated, you must inflate these balloons yourself. You will recieve 2 balloons. Baby JJ Shaped: 32 inches (81cm) & Round Cocomelon Family: 18 inches (45cm).