Amscan Multicolored Numerical Happy Birthday Party Balloons (Age 1-19) (Pack Of Mixed, , Pack of 10 multicolored balloons with numerical Happy Birthday designs. Available from age 1 to 19. Age 1-6 features cake pattern, age 7-16 features musical note pattern and age 17-19 features star pattern. Supplied deflated for ease of postage. Once inflated avoid exposure to extreme temperatures.