Each pack of happy birthday balloons contain thirteen letters that spell out "Happy birthday". 

Each letter has an inflated size of 14" and features a vibrant metallic finish, sure to make an impression at any birthday celebration. 

No Helium is required, as each set of balloons contains a plastic inflating tube, making it easy and convenient to use. 
 
Available in a choice of 4 different colours:
Gold 
Silver
Pink 
Blue