70th Birthday Decorations Supplies - Happy Birthday Banner,70th Gold Number Balloons,Gold Star Balloons for 70th Birthday Wedding Party Supplies

Made of food grade material, safe and non-toxic Strong and light, can float with helium filled Can be reused, use the straw to deflated balloons after party ends Package Incudes: HAPPY BIRTHDAY BANNER x 1 Gold Star Balloons x 5 Gold Balloons x 10 Black Balloons x 10 Number 7 Foil Balloons x 1 Number 0 Foil Balloons x 1 Why Helium balloons deflate so quick? Because helium atoms are small enough to slip between spaces in the balloon material. There is less space between the molecules in Mylar, so the balloon stays inflated longer. How long will balloons float? Research shows average float time is 5-7 hours. Float time can vary significantly based on the level of inflation,size of balloon, temperature and altitude. We recommend inflating balloons 1-2 hours prior to the event for the best results. t time to 1 week.