These 5 inch round Alien - Deluxe Key Lime Green latex balloons from Sempertex are perfect for a alien party or for using as accents for centerpieces, balloon deliveries and with balloon animals. Package includes 10 - 5 inch Alien - Deluxe Key Lime Green latex balloons. Recommended to be inflated with a hand pump or balloon air inflator as they do not hold helium. Balloons do not float and arrive uninflated.