1. Small size 24g, can blow up to 35-40cm (with blowing tube) 2. Medium size 45g, blow up to about 50-60cm (with blowpipe) 3. Large size 80g, blow up to about 60-80cm (with blowpipe) 4. Extra large 450g, can blow to about 1.0-1.2 meters (with air blowing pipe) 5. For small and medium/large size, directly insert the blower tube from the air hole and blow it with your mouth. Extra large size should be equipped with a pump (not included) 6. Because the ball skin is thicker, it is better than traditional balloons. When you don’t want to play, you can pierce the blowing tube from the position of the air hole. You can also empty the gas inside the product, which is very convenient to carry.