SIZE - Each Letter Balloons length approx is 16"Baby Shark Shape Size: 21 x 17" Music Note Shape Size:20 x 16 ". Perfect for ocean theme baby birthday party celebration! PACKAGE - Includes independent "DOO DOO" and 1 Music Note Balloons 3 pcs mixed baby shark Balloons(pink blue yellow)1 straw for inflating balloons 1 string for hanging balloons. Manufacturered by LetDec. 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). 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 - Shark Doo Doo balloons is great to decorate a Under The Sea/Dad Mommy Shark Family/Cute Shark/Little Shark/Ocean Theme Baby Shower Birthday Partyetc.