Color:Silver Small Set of Four LettersSimply the BEST UNFORGETTABLE ROMANTIC balloon set - Premium Product at an AMAZING price! Show your LOVE with Special style!BENEFITS:Quality product using only the best materials 16" size and beautiful metallic finish.Have your guests talking and the bride smiling Add wow to any romantic event. How to Properly Use Aluminum Foil Balloons: Blow air into the balloons must be slow the available pump charge to 90% then Straw gass blowing easy to control so as not to break. If there are 2 layers of aluminum foil sticky situation must stop inflatingThe 2 layer of aluminum foil and then inflated or easy to damage Because the gass thermal expansion and contraction or winter temperature d should be inflated to the aluminum foil balloon; and the summer temperatures rise should be appropriate to foil balloons deflated so as to avoid expansion rupture.The balloon may have a slight leakage of the individual after all is factory mass production with transparent glue can remedy the emergency. Why the balloon filled with helium and hydrogen only float for 72-144 hours? When the balloon filled with helium or hydrogen because these atoms of the gass is very small can penetrate foil balloons so the balloon will inevitably slow leak. In general filled with helium or hydrogen balloon can float in the air about 2-3 Days the balloon will be deflated slowly it is normal for good quality aluminum foil balloon. But if the balloon is filled with air good quality of the balloon is normally not leak it can last for several months or even half an year.