Inflatable Happy Birthday Balloons with Strings and Blow Up Straw Included. 11 Colour Choices!! Easy to Fill : > Letter Height: 33cm's Letter Width: 22cm Measures over 5ft Wide or more if you space the letters out. Note: Do Not Force the Straw as Rips May Occur. Open With Care and Use the String Carefully to Avoid Damaging the Attachments. Lift Green Flap and Insert Straw Carefully Any Small Straw Can Be Used. Straws from Drinks Cartons are also ideal to Use if Needed.