20 Number Balloons Black Big Giant Jumbo Big Large 20 Foil Mylar Helium Number Balloons Black 20th Birthday Party Decorations Supplies 20 Anniversary Events for Women Men

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.
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.
CHOOSE THEM:The black number balloon is made of high-quality aluminum film that empty balloon is 42 inch,after filled with helium or air,its 40 inch.Please use the straw in the balloon set to inflate it slowly.
PACKAGE CONTENTS: 2 Pieces 40 Inch black number Balloons:No.2 black number Balloon + No.0 black number Balloon + 1 straw.
PERFECT SUITABLE FOR:The black 20 number foil Mylar balloons are the best choice for: 20th birthday party,wedding,graduation anniversary,holiday celebration,business,big events,school class party,Christmas party, 2021 new years decoration.You can stick the black 20 number balloons and black 20 number balloons on the wall,window or door,you can inflate with both helium or air,you can even place them on the bed, floor or table,provide your party or home a good display.