20 Number Balloons Silver Giant Jumbo Big Large Number 20 Foil Mylar Balloons for 20th Birthday Party Supplies 20 Anniversary Events Decorations

PERFECT SUITABLE FOR: Silver Number 20 foil Mylar balloons are the best choice for: 20th birthday party,20th wedding anniversary celebration,company 20th anniversary party and many other party decoration.PACKAGE CONTENTS: 2 Pieces 40 Inch Silver number Balloons:No.2 Silver number Balloon + No.0 Silver number Balloon.CHOOSE THEM: The Silver number balloon is made of high-quality aluminum film that empty balloon is 42 inch,after filled with helium or air,it's 40 inch.Please use the straw in the balloon set to inflate it slowly.TIPS FOR NUMBER BALLOONS: Due to the thermal expansion and contraction characteristics of aluminum foil,please avoid filling more than 90% of air or helium.If it is over-inflated,it can easily cause the balloon to explode at high temperatures.Please avoid leaving the balloons in an outdoor high temperature environment for a long time.If the ambient temperature is too low,it will also cause the balloon to deflate.At this point,you can use the straw to inflate again.SERVICE:We do our best to provide customers with better products. If you have any questions, we promise to give you a satisfactory answer without any delay.