SIZE: Each Letter Balloons length approx is 16" Round Space Shape Size: approx 18" Spaceship Shape Size: approx 26" x 22" Rocket Shape Size: approx 30" x 24" Astronaut Shape Size: approx 30" x 23". Perfect for space theme baby birthday party celebration! DECORATION: Suit for hunging from windowroombranches and ceilingsdessert tablesparty backgroundthe adornment of the integral collocation of color is also very perfect place you want to decorate. Manufacturered by Letromp. EASY ASSEMBLED: All the balloons are easy to assemble. All you need to do is use the straw in the package to blow up the balloons(use a pump would be faster). Note: Foil balloons can not float with helium. You can put them on the string or use a double-sided tape to stick them to anywhere you want. GUARANTEE: Fast Amazon logistics and 100% refund service if you have any questions please feel free to contact us. APPLICATION: Blast off balloons are great to decorate a cosmic themed party outer space themed party spaceship birthday partyetc.