SIZE - Each Letter Balloons length approx is 16" Moon Shape Balloon Size: approx 36" Rocket Shape Balloon Size: approx 30" Astronaut Shape Balloon Size: approx 32" Latex Balloons Size:12" Outer Space Happy Birthday Banner Size: 4"-8"Two the Moon Cake Topper Size: 6.5" x 10.5". Perfect for space theme baby 2nd birthday party celebration! DECORATION - Suit for hanging from the window room branches and ceilings dessert tables party background the adornment of the integral collocation of color is also very perfect place you want to decorate. Manufacturered by HEETON. 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: Two the moon letter balloons can not float with helium. You can put them on the string or use double-sided tape to stick them anywhere you want. Please note the mylar balloon can't float with helium. GUARANTEE - Fast Amazon logistics and 100% refund service if you have any questions please feel free to contact us. APPLICATION - Two the moon party supplies are great to decorate our loved baby space 2nd birthday party galaxy astronaut 2nd birthday party 2 the moon birthday party outer space second birthday party etc.